Rolson 28230 42 piece precision screwdriver set rolson 28230 the rolson 28230 42 piece screwdriver and bit set consists of a precision ratchet handle screwdriver with soft grip and nbsp 20x 28mm precision screwdriver bits plus a t handle stubby ratchet screwdriver with 20x 25mm screwdriver bits rolson 28230 42pc screwdriver bit set