This heavy-duty model is built for punching up to 7/8" diameter holes in materials up to 3/8" thick. The addition of eyebolts on the sides of the unit allows for easy attachment of a lift assist or a counter-balancer for improved ergonomics. Its 3-15/16" throat depth adds to its versatility covering a wide range of workpieces. Easily confirm the hole position with the jog down feature.