Wera Kraftform Kompakt 400 T-Handle Screwdriver and Bit Set More Torque, Less Effort Wrenching on your bike should feel deliberate, not frustrating. The T-handle format here is the reason this set earns its place in a serious workshop: the T-handle shape allows high torque transmission in difficult tightening and loosening situations, giving you the mechanical advantage that a standard pistol-grip screwdriver just can't match when a fastener is stubborn. The two-component handle with finger recesses and a surface that grips where it needs to facilitates very high power transmission and fatigue-free working, so you're not white-knuckling it through a long bench session. The Rapidaptor quick-release chuck accepts 1/4" DIN ISO 1173-C 6. 3 and E 6. 3 bits, and every function can be carried out with one hand - swap profiles fast, keep moving. The whole set packs into a robust textile box that's easy to stow and grab when you need it. Features T-handle design puts your whole arm behind the driver for maximum torque on tight or stubborn fasteners 2-component Kraftform handle with finger recesses hard zones allow fast spinning; soft zones grip during high-torque applications for fatigue-free use Rapidaptor quick-release chuck accepts 1/4" DIN ISO 1173-C 6. 3 and E 6. 3 bits with one-hand loading and release for fast profile swaps Free-turning sleeve lets you steady the bit on the screw head at the start of each fastener to prevent slipping before torque is applied Special surface treatment on blades provides corrosion protection and precise fit in the screw head 17-piece set in robust textile box keeps bits organized, protected, and ready to grab at the bench or pack for travel | Wera | Kraftform Kompakt 400 T-Handle Screwdriver And Bit Set T-Handle Bit Driver, High Torque, Magnetic