The Park Tool SW-16.3 is the spoke wrench dedicated to 3/16" (4.8 mm) hex internal nipples, the ones that on some wheels can only be accessed through holes on the outside of the rim. It is a single-size tool: it works on one nipple type only, with a precise fit.
The extra-long 3.25" shaft reaches the nipple even in the deep cavities of aero rims, while the 7.1 mm outside diameter keeps it slim enough to enter the rim access hole. The dual-density handle offers a comfortable grip even during longer truing sessions.
Where to use the 3/16" internal nipple wrench
- Wheels with 3/16" (4.8 mm) hex internal nipples.
- Deep-section aero rims, where the nipple sits at the bottom of a deep cavity.
- Truing and spoke tension adjustment on wheels with nipples hidden inside the rim.
Why choose Park Tool SW-16.3
- Dedicated 3/16" (4.8 mm) size for a precise fit on the nipple.
- Extra-long shaft designed for deep aero rims.
- Slim shaft with a 7.1 mm outside diameter.
- Comfortable dual-density handle.
If the wheels you service use 4.8 mm hex internal nipples, the Park Tool SW-16.3 spoke wrench for 3/16" internal nipples is the specific tool to keep on your bench.
TECHNICAL SPECIFICATIONS
General
- Code: SW-16.3
- Brand: Park Tool
- Type: internal nipple spoke wrench
- Handle: dual-density
Dimensions
- Shaft length: 3.25"
- Shaft outside diameter: 7.1 mm (0.28")
Compatibility
- Internal nipples: 3/16" (4.8 mm) hex
The Park Tool SW-16.3 is the spoke wrench dedicated to 3/16" (4.8 mm) hex internal nipples, the ones that on some wheels can only be accessed through holes on the outside of the rim. It is a single-size tool: it works on one nipple type only, with a precise fit.
The extra-long 3.25" shaft reaches the nipple even in the deep cavities of aero rims, while the 7.1 mm outside diameter keeps it slim enough to enter the rim access hole. The dual-density handle offers a comfortable grip even during longer truing sessions.
Where to use the 3/16" internal nipple wrench
- Wheels with 3/16" (4.8 mm) hex internal nipples.
- Deep-section aero rims, where the nipple sits at the bottom of a deep cavity.
- Truing and spoke tension adjustment on wheels with nipples hidden inside the rim.
Why choose Park Tool SW-16.3
- Dedicated 3/16" (4.8 mm) size for a precise fit on the nipple.
- Extra-long shaft designed for deep aero rims.
- Slim shaft with a 7.1 mm outside diameter.
- Comfortable dual-density handle.
If the wheels you service use 4.8 mm hex internal nipples, the Park Tool SW-16.3 spoke wrench for 3/16" internal nipples is the specific tool to keep on your bench.
TECHNICAL SPECIFICATIONS
General
- Code: SW-16.3
- Brand: Park Tool
- Type: internal nipple spoke wrench
- Handle: dual-density
Dimensions
- Shaft length: 3.25"
- Shaft outside diameter: 7.1 mm (0.28")
Compatibility
- Internal nipples: 3/16" (4.8 mm) hex
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