The Cast Iron Clamps, we offer are perfect for woodworkers working on cabinets and wooden boxes. Just slide the pipe clamp through any length 3/4" pipe to hold wood in place for gluing and drilling! Constructed using tough cast iron that keeps wood steady as you work, our Cast Iron Clamps are a great addition to any woodworking work bench at the home or shop. Features : Constructed of durable cast iron Clamp : 3/4' Throat depth : 1-1/2' Threaded pipe not included