quick set-up, repeatability, billet aluminum, corrosion-resistant anodizing, universal, and easy to use. Up to 4.5" diameter pistons.Proform Features Quick Set-up and Offers Repeatability Between Pistons 66772Specifications: Feature/Benefit Finally an affordable piston vise with all the best features including; quick set-up, repeatability, billet aluminum, corrosion-resistant anodizing, universal, and easy to use. Tool Type Piston Vise Category Angled Piston Vise Description_ABR Piston Vise Description_SHO Angled Piston Vise Description_INV Piston Vise Description_INV Heavy Duty Description_INV Multiple Angle Description_DEF Engine Piston Vise Description_ASC Piston Vise Description_ASC Heavy Duty Description_ASC Multiple Angle Model Description_ASC Fits Up To 4.500 Inch Diam. Pistons Description_LAB Piston Vise Description_LAB Heavy Duty Description_LAB Multiple Angle Model Description_LAB Fits Up To 4.500 Inch Diam. Pisto Description_DES Piston Vise Description_DES Heavy Duty Description_DES Multiple Angle Model Description_DES Fits Up To 4.5 Inch Diam. Pistons Description_EXT Engine Piston Vise Description_EXT Heavy Duty Style Description_EXT Multiple Angle Model Description_EXT Fits Up To 4.5 Inch Diameter Engine Pistons Description_EXT Constructed From Quality Billet Aluminum and Has A Red Anodized Finish Description_EXT Features Quick Set-up and Offers Repeatability Between Pistons Description_MKT Finally an affordable piston vise with all the best features including Description_MKT quick set-up, repeatability, billet aluminum, corrosion-resistant anodizing, universal, and easy to use. Up to 4.5" diameter pistons.