Makes short work on 3/4 button light panels on tractor trailers... Custom make light panels, Grommet holes, or what ever....I've used this to puch 3/4 holes in1/16", and 1/8" stainless1/8", 3/16", and 1/4" aluminum1/8", 3/16" mild steel.Hasn't failed me yet.I am using a 10 ton porta power ram, and some times a 10 ton electric over hydraulic pump, for repetitive holes.Well worth the money.