Bits - 1/4 Inch Hex Drive 25mm bits flat 0.6x4.5, 0.8x5.5, 1.0x6.5mm. Bits contd. - PH1, PH2, PH3, PZ1, PZ2, PZ3, TX10, TX15, TX20, TX25, TX30, TX40. Bits contd. - TPX20, TPX25, TPX30, ROB No. 1, No. 2, No. 3, Hex 4mm, 5mm, 6mm GR no.2 (2 pc). Accessories - 1/4in. hex drive 50mm quick release bit holder adaptor 1/4in.hex x 1/4in.. All Teng Tools bits with a hexagonal drive are designed and manufactured in accordance with the latest industrial standards. Screwdriver bits and socket bits are classified as consumables and thus are only guaranteed to meet dimensional standards.. Teng Tools unique bit sets mean resourceful storage in pocket format boxes, with bits that are easy to access and where the most popular bit holders are included..)