Powerful T-handle design for easy punching action. High leverage handle and nontip base. Unparalleled durability with heavy-duty die-cast construction. Patented technology for superior cutting of 9/32" holes in letter, legal and A4 size paper. Capacity is based on 20-lb. bond. As more heads are added to punch, the sheet punching capacity decreases. Replacement Punch Head (SWI74854), sold separately. Steel.