The Facom 64 series is the sets of metric and inch straight ratchet ring wrenches. The size of the wrench in the set are 1/4x5/16 - 3/8x7/16 - 1/2x9/16 -5/8x11/16 - 3/4x13/16 - 7/8x15/16 in. Supplied as box or roll sets