STRAIGHT HANDLE SEAMER - Use to bend or form sheet metal and other pliable sheet materials. 1-1/4" throat depth with 1/4" depth graduations INTERCHANGEABLE BLADES - Aluminum blades available in 5", 9" and 15" sizes with quick change over HEAVY DUTY COMPONENTS -Brackets are hot drop-forged of high carbon steel for strength and durability STRONGEST HANDLES - High tensile strength steel will not bend from hand pressure and provides efficient conversion of hand force COMFORTABLE GRIPS - Midwest's Kush'N-Power grips provide the perfect balance of comfort, grip and durability. Designed for the professional, these chemical resistant grips offer slip-free usage all day long.