The Vertical Cable 351 Series CAT5e V-Max Keystone Jack is an unshielded, punch-down keystone jack in blue, sold in a 25-pack. Features T568A/B wiring compatibility and fits SignaMax and Leviton keystone faceplates. Lifetime warranty. Dimensions (single jack): 0.78 in. H x 0.67 in. W x 1.22 in. D; single jack weight 0.04 lb.