Bit-Safe 61 Universal 1. 61-piece kit. Comes with a 1/4" drive Rapidaptor bit holder and 60 BiTorsion 1/4" drive bits. The Torsion-Style bits are absolute premium bits. The tip is hardened steel but the torsion zone in the shaft is softer. The peak loads of impact drivers; prone to break hardened bits; are absorbed. This makes the Torsion-Style bits tougher and more resilient for a longer service life. Packed in a robust textile fold-up pouch with hook and loop on the rear side. Kit contains: Series 889/4/1 K - Rapidaptor Quick-Release bit chuck. 1/4" drive x 50mm long. Compatible with all 1/4" insert bits and the longer power bits. The bit holder mechanically holds bits tight through a self-locking mechanism; just push bit in and it will self-adjust for bit length and is magnetic. By pushing the bit holder rubber forwards; the bit releases. The bit holder can be held by hand for support during screwing actions since the sleeve is free spinning. Series 851/1 TZ PH - Phillips bits. 1/4" drive. 25mm long. Universal; tough. Torsion-Style Incl. 3 x PH1; 10 x PH2; 3 x PH3. Series 855/1 TZ PZ - Pozidrive bits. 1/4" drive. 25mm long. Universal; tough. Torsion-Style Incl. 3 x PZ1; 10 x PZ2; 2 x PZ3. Series 867/1 TZ TORX® - Torx® bits. 1/4" drive. 25mm long. Universal; tough. Torsion-Style. Incl. 2 x TX10; 3 x TX15; 3 x TX20; 3 x TX25; 3 x TX30; 2 x TX40. Series 800/1 TZ - slotted bits. 1/4" drive. 25mm long. Sizes mentioned is blade tickness x