Flexible Shaft Extension - pins in a hard to reach place Extender 60mm shaft - doubles as a T-handle for extra torque Comes with 1/4" adapter- using this 4mm bit kit with standard 1/4" drivers Nut Driver Size: 2.5 3.0 3.5 4.0 4.5 5.0 mm Hex Size: 0.7 0.9 1.0 1.3 1.5 2.0 2.5 3.0 3.5 4.0 mm Torx Size: T3 T4 T5 T6 T7 Torx Security: T8 T9 T10 T15 T20 Flat size: 1.0 1.3 1.5 2.0 2.5 3.0 3.5 4.0 mm Phillips Size: PH000 PH00 PH0 PH1 PH2 Penta lobe Size: 0.8 1.2 1.5 mm Tri-point: Y0.6 Y2.0 Y3 Triangle size: 2.0 2.3 mm Spanner Size: 2.6 mm Square Size: SQ0 SQ1 Ejector Bit SIM: 1 mm Pozidriv: PZ000 PZ00 PZ0 PZ1 PZ2 Flexible shaft < p> When you need to deal with hidden screws in the corner, back or other hard-to-handle places from the front, the flexible shaft can be bent to reach where you want to reach. High quality non-slip handle The handle is made of a full piece of hard aluminum, plus an outer layer of anti-slip silicone. slip resistance and increases the resistance of the black rubber