Bit-Check 30 Universal 1Product Description: 29 bits in a minimum of space; simple removal and reinsertion of the bits. Rapidaptor holder ensures rapid bit change. Universal bits fitted for diverse applications; robust Bit Check. Contents: 1x Bit Check 30 Universal 1, 30 pieces; 1x 889 4 1 K Rapidaptor Universal Bit Holder, 1 4" x 50 mm; 6x 851 1 TZ bits: 2x PH 1x25, 3x PH 2x25, PH 3x25; 6x 855 1 TH bits: 2x PZ 1x25, 3x PZ 2x25, PZ 3x25; 6x 867 1 TZ TORX bits: TX 10x25, TX