DeWalt Extreme Impact Torsion bits withstand the high speed and torque of Impact Drivers, so your bit can keep up with you, even under pressure The magnetic screw lock enables tasks to be completed quicker and easier, reducing instances of dropped or lost screws. DeWalt Extreme Impact Torsion Pozi Bits have a 15� torsion zone that allows the screw driver bit to flex rather than break, and the full fit head prevents rounding of the screw head and prevents 'cam out' (bit head slipping out of the screw head due to the turning force). The magnetic screw lock enables tasks to be completed quicker and easier, reducing instances of dropped or lost screws. This set includes x25 25mm PZ2 Extreme Impact Torsion bits and comes in a Mini ToughCase. Features Longer life, faster, more accurate screw driving thanks to a specially designed bit tip which optimises the fit into the fastener. Eliminates wobble and stripped screws Preferred by professional users for maximum hold, tight access and no run out Excellent hold, reach, stability and accessibility in all screw driving applications even the most awkward to reach No run out. Excellent access in tight, difficult to reach applications Premium quality materials and optimised bit design for optimum flex, strength and extreme durability Fits the DT70716 T-stak Caddy Additon of the Tstak Caddy makes this set compatible with the TSTAK� storage system for easy in-van and workshop storage. The genuine DT7701 DeWalt Magnetic bit holder / Guide Sleeve for all 1/4 Inch Hex bits, holds screw during positioning. Guide sleeve helps to achieve staraight, accurate screwdriving. Guide sleeve reduces risk of finger injury. Diameter for screwdriving guide is 9.5mm Diameter: 1/4 inch Hex Length: 80mm Extends to 120mm when sleeve is fully extended