The Park Tool DSD-4 is the 5 mm flat-blade screwdriver dedicated to derailleur adjustment. The blade of the Park Tool DSD-4 derailleur screwdriver is precision-ground to fill the slot of adjustment and limit screws properly and transfer rotation without slipping.
Slotted adjustment screws are small, and a worn or wrong-sized blade tends to cam out of the slot and mark it. With a properly sized 5 mm blade, the DSD-4 seats fully and allows precise adjustments, even of just a few degrees. The ergonomic 6061 aluminium handle, CNC machined and hard anodized, gives a solid grip, and the 145 mm shaft reaches the screws on front and rear derailleurs without interfering with the frame.
Where to use the Park Tool DSD-4 screwdriver
- Slotted limit screws on rear derailleurs.
- Slotted limit screws on front derailleurs.
- Slotted adjustment screws on other drivetrain components.
- Slotted screws that fit a 5 mm blade.
Why choose Park Tool DSD-4
- 5 mm flat blade, precision-ground for an accurate fit.
- Full contact in the slot reduces the risk of slipping and damaging the screw.
- Fine, repeatable adjustments while tuning your shifting.
- CNC machined, anodized 6061 aluminium handle, built to last.
- The ideal partner to the DSD-2 #2 cross tip to cover the most common adjustment screws.
For anyone who wants a dedicated flat-blade screwdriver for shifting, precise and built for the workshop, the Park Tool DSD-4 5 mm flat-blade derailleur screwdriver is the right choice.
TECHNICAL SPECIFICATIONS
General
- Item code: DSD-4
- Tip: 5 mm precision-ground flat blade
- Total length: 232 mm
- Shaft length: 145 mm
- Weight: 124 g
Materials
- Handle: CNC machined 6061 aluminium, hard anodized, ergonomic shape
The Park Tool DSD-4 is the 5 mm flat-blade screwdriver dedicated to derailleur adjustment. The blade of the Park Tool DSD-4 derailleur screwdriver is precision-ground to fill the slot of adjustment and limit screws properly and transfer rotation without slipping.
Slotted adjustment screws are small, and a worn or wrong-sized blade tends to cam out of the slot and mark it. With a properly sized 5 mm blade, the DSD-4 seats fully and allows precise adjustments, even of just a few degrees. The ergonomic 6061 aluminium handle, CNC machined and hard anodized, gives a solid grip, and the 145 mm shaft reaches the screws on front and rear derailleurs without interfering with the frame.
Where to use the Park Tool DSD-4 screwdriver
- Slotted limit screws on rear derailleurs.
- Slotted limit screws on front derailleurs.
- Slotted adjustment screws on other drivetrain components.
- Slotted screws that fit a 5 mm blade.
Why choose Park Tool DSD-4
- 5 mm flat blade, precision-ground for an accurate fit.
- Full contact in the slot reduces the risk of slipping and damaging the screw.
- Fine, repeatable adjustments while tuning your shifting.
- CNC machined, anodized 6061 aluminium handle, built to last.
- The ideal partner to the DSD-2 #2 cross tip to cover the most common adjustment screws.
For anyone who wants a dedicated flat-blade screwdriver for shifting, precise and built for the workshop, the Park Tool DSD-4 5 mm flat-blade derailleur screwdriver is the right choice.
TECHNICAL SPECIFICATIONS
General
- Item code: DSD-4
- Tip: 5 mm precision-ground flat blade
- Total length: 232 mm
- Shaft length: 145 mm
- Weight: 124 g
Materials
- Handle: CNC machined 6061 aluminium, hard anodized, ergonomic shape
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