The B-Line B3373-3/4 & FNW 7022 3/4" Pipe Clamp Hanger Lot of 2 consists of two riser clamps made of carbon steel and steel. The clamps have two holes per leaf and are designed for use with 3/4" pipes. The B-Line brand and specific model number FNW 7022 ensure quality and compatibility with various industrial systems that require precise measurements and durable hardware.