This is a set of Dubro Heavy-Duty Ball Links for use with 3mm threaded rods. Black nylon link construction Brass swivel-ball construction Beveled brass swivel-ball stand-off Hex-Head machine mounting screw 12 Heavy-Duty ball links w/brass swivel-balls (3mm self threading) 12 beveled brass swivel-ball stand-offs 12 3mm x 18mm socket head cap screws 12 3mm lock nuts (metal construction w/nylon insert) 2.5mm hex wrench (GPMR8012) Ball Link Length: 27mm (1.063") Standoff Height: 3.2mm (0.125") kpm11/03/2004 ir/jxs &