Machined from solid brass. The angle of the sprue formers is calculated to maintain the correct contact point between the mold and wax injector nozzle. The matching rods measure 2" long.
Standard formers and 3mm (approx. 1/8") rods are sold in packages of 10 and economical packages of 26.
Larger formers and 4mm rods for heavier models are sold in packages of 10 only.