US sizes. 17-piece set. T-handle with integrated left/right switchable ratchet with fine 80 teeth with return angle of 4.5° for quick and safe working. Complete with 16 extended 1/4" bits of 89mm length. All is packed in a tough textile pouch with hook & loops fasteners. - Reversing lever for comfortable clockwise/ counterclockwise direction change - Convenient working thanks to the ratchet mechanism fully embedded in the handle - Ergonomic 2-component handle with finger handle recesses and pleasant surface feel for very high power transmission and less fatigue - Rapidaptor bitholding screwdriver with fastrotating sleeve for lightning-fast bit changes and high working speeds - For bits with 1/4" external hexagon drive as per DIN ISO 1173-C 6.3 and E 6.3. US sizes Includes: T-handle: 416 RA 1x 1/4"x45. Phillips bits: 851/4 Z 1x PH 2x89; 1x PH 3x89. Torx bits: 867/4 Z TORX®1x TX 10x89; 1x TX 15x89; 1x TX 20x89; 1x TX 25x89; 1x TX 30x89; 1x TX 40x89. Hex bits: 840/4 Z 1x 1/8"x89; 1x 5/32"x89; 1x 3/16"x89; 1x 7/32"x89;1x 1/4"x89. Square bits: 868/4 1x # 2x89; 1x # 3x89. Slotted bits: 800/4 Z 1x 1;0x5;5x89 Hook & loop fasteners: K 120 1x 50;0x120;0.