JAW WIDTH : 2-3/8" (60 mm app.) JAW LENGTH : 1" (25mm app.) MAXIMUM JAW OPENING : 2-1/8" (55 mm app.) OVERALL LENGTH : 4-3/8"(111 mm app.) TOTAL LENGTH : 160 mm Height : 44 mm app. For inspection, precision jig boring, grinding and other operations where precise holding is necessary All surfaces are hardened and precision ground square and parallel Ground "V" way Hardened and ground ensures consistent accuracy Base and front jaw are of one piece all steel construction.