We are offering three prong clamp (nickel plated). model no: - 504 specifications • made with casted material, with interlocking twin screw. • specially design for catching object up to 4mm to 90mm dia object. • jaws covered with silicon sleeves to insure secure grip on object(can be used for condenser or burette) • attached 10mm by 150200250mm long chrome plated rod. • duly nickel plated finishing.