MIDWEST Seamer  - 15 Inch Straight Sheet Metal Bender with Aluminum Blades & KUSH'N-POWER Comfort Grip Handle - MWT-S15 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 - Kush'N-Power grips conforms with the motion of the user's hands and the indented ribs prevent hand and finger slippage