The OSAWA W301 Wonder-Gun family provides blow-off, suction and material transfer with a smaller minimum internal passage than the W101 range. The standard W301 is 142 mm long, has an 11 mm minimum internal diameter and weighs 260 g. A and B sets add suction accessories, while the III range provides mounting variants and configurations without a hose joint. This article separates the body specifications from the contents of each complete set.
Model coverage
W301; W301-A; W301-B; W301-III-LC; W301-III-LC-A; W301-III-LC-B; W301-III-TC; W301-III-TC-A; W301-III-TC-B; W301-III-LH; W301-III-LH-A; W301-III-LH-B; W301-III-TH; W301-III-TH-A; W301-III-TH-B; W301-III (without hose joint); W301-III-A (without hose joint); W301-III-B (without hose joint).
W301

Configuration and use
The gun body provides blow-off, suction and material-transfer functions.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
| Weight | 260g |
W301-A

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301 |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-B

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301 |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
W301-III-LC

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. Check the pictured mounting and connection arrangement when selecting this fitted version.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
W301-III-LC-A

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-LC |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-III-LC-B

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-LC |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
W301-III-TC

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. Check the pictured mounting and connection arrangement when selecting this fitted version.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
W301-III-TC-A

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-TC |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-III-TC-B

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-TC |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
W301-III-LH

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. Check the pictured mounting and connection arrangement when selecting this fitted version.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
W301-III-LH-A

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-LH |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-III-LH-B

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-LH |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
W301-III-TH

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. Check the pictured mounting and connection arrangement when selecting this fitted version.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
W301-III-TH-A

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-TH |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-III-TH-B

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below.
Included components / listed data
| Wonder-Gun | W301-III-TH |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
W301-III (without hose joint)

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. This version is supplied without a hose joint; specify the required air connection separately.
Dimensions and specifications
| Length | 142mm |
| Minimum ID | 11mm |
| Weight | 175g |
W301-III-A (without hose joint)

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below. This version is supplied without a hose joint; specify the required air connection separately.
Included components / listed data
| Wonder-Gun | W301-III without hose joint |
| Suction pipe | φ10×150mm |
| Hose clamp | 1piece |
| Dust bag | 370mm×200mm |
W301-III-B (without hose joint)

Configuration and use
The gun body provides blow-off, suction and material-transfer functions. The listed accessory configuration is intended primarily for suction work; its component sizes and quantities are shown below. This version is supplied without a hose joint; specify the required air connection separately.
Included components / listed data
| Wonder-Gun | W301-III without hose joint |
| Suction pipe | φ10×150mm |
| Hose clamp | 2pieces |
| Duct hose | φ25×2000mm |
| Dust bag | 370mm×200mm |
Performance and configuration graphics
Use the graphics below to identify the shown operating conditions and configuration. Shared family charts should be read against the specific model curve; a point on a chart is not a universal rating for every accessory or installation.

Selection and ordering
Specify the complete model designation, including mounting, set and hose-joint details. Check the actual material to be handled, nozzle access, hose routing and collection arrangement before choosing a configuration. A component list describes the contents of that particular set; it should not be assumed to apply to another suffix. Compare the performance graphics at the relevant supply condition, and confirm any custom nozzle or special-order requirements before preparing the final equipment specification.