This extension clamp features heavy-duty electroplated zinc alloy construction and dual prong adjustments. The 5" long extension rod is constructed of stainless steel. Prongs open to about 4", have a recommended maximum grip size of about 3.25", and feature double keyed spring-type adjustment screws. Prongs are covered with non-slip PVC sleeves. Overall length is 10.75". Maximum use temperature80??C.