The Lattice Lab System is a lightweight set of aluminum support rods and clamps that allows a wide range of lab apparatus to be assembled and securely supported. Assembly is easy and requires only a screwdriver. Support rods are made of hard aluminum and foot plates and hook connectors are made of cast alloy. Contents: Foot Plate, 2-5/16" diameter 4ea. Set Screw for Foot Plate 4ea. Anchoring Screw for Foot Plate 12ea. Hook Connector with Thumbscrew 22ea. Support Rod, 2" long, 1/2" diameter 8ea. Support Rod, 18" long, 1/2" diameter 2ea. Support Rod, 24" long, 1/2" diameter 8ea.