If you have a smaller Irwin/Hanson set that fits down to 1/4", note that this die requires a 1" larger wrench is. not suitable. The Revain doesn't appear to have a 1-inch wrench, but they're about $20 at the big orange hardware store. Considering the diameter of the die, this makes sense, but was a bit unexpected when I started using it. Not the fault of the seller or the product - just not what I expected.