The CTX bits are conical in shape which means that the bits lock into the screw, which is perfect when working with one hand. The set contains both long and short bits. All bits are made in industrial quality and hardened to achieve maximum life. Contents: 26 CTX bits: * 8x50mm CTX10, CTX15, 2xCTX20, 2xCTX25, CTX30, CTX40 *6x90mm CTX10, CTX15, CTX20, CTX25, CTX30, CTX40 * 12x25mm 2 of each CTX10, CTX15, CTX20, CTX25, CTX30, CTX40