Bit-Check 7 Universal 1 SB, 7 pieces 1x 893/4/1 K Universal Bit Holder: 1/4", x 50 mm 2x 851/1 Z bits: PH 1x25 mm, PH 2x25 mm 2x 855/1 Z bits: PZ 1x25 mm, PZ 2x25 mm 2x 800/1 Z bits: 1x5.5x25 mm, 1.2x6.5x25 mm6 Wera bits tidily arranged in a minimum of space in a practical Bit-Check. Tough viscous Wera bits for hexagon head screws and universal use. 1 universal holder 893/4/1 K for insertion in the power screwdriver or for use in the chuck of the electric drill.