This lattice lab system features an assortment of aluminum Rods from 18 inch to 48 inch long including 10 Rods that are 48 inch long. Assembly is easy and requres only a Screwdriver. Support Rods are made of hard aluminum and foot plates and hook connectors are made of cast alloy. Please note: must be shipped by motor freight. Includes: foot plate, 2-5/16 diamter (6), set screw for foot plate (6), anchoring screw for foot plate (18), hook connector with thumbscrew (42), support rod 2 inch long, 1/2 inch diameter (10), support rod 18 inch long, 1/2 inch diameter (3), support rod 36 inch long 1/2 inch diameter (2), support rod 48 inch long 1/2 inch diameter (10).