Park tool DSD-4 Derailleur Screwdriver 5 mm Tool

Achieve flawless shifting with the PARK TOOL DSD-4, the definitive tool for precise derailleur adjustments. Engineered to prevent cam-out and damage, its custom-ground 5mm flat blade ensures a perfect, non-slip fit on delicate limit and B-tension screws. The ergonomic, CNC-machined 6061 aluminum handle offers superior control and tactile feedback for confident micro-adjustments. Built for a lifetime of use, this professional-grade screwdriver is the key to crisp, reliable gear changes and an essential upgrade for any mechanic´s toolbox