Bosch CC60392 7-Piece Clic-Change Chuck & Bits Set Insert bits: (1) 9/64 In., (1) 5/64 In., (1) 3/32 In., (1) 1/8 In., (1) 5/32 In., (1) 3/16 In., (1) 7/64 In. Change bits without re-chucking Switch from bit to bit quickly Fits all 3/8 In. and 1/2 In. drills