This is the best ratchet/bit set on the market. The bits are all made from S2 tool steel and the ratchets are jewels of precision workmanship. The ratchet uses a sprague clutch system. Holding a bit it is only 20m high. The real value is hidden within this set because it includes an 8 pcs set of the new 5 point tamper proof torx security fastener, as well as tradition tamper proof bits, torx bits, phillips and straight bits. This is the master set for any field technician/service professional.