The PROFORM piston installation tool features nylon-composite construction so you can knock away all night without any damage to your expensive pistons! This affordable tool weighs just under 2 pounds, features steel-shot filled chamber, and an easy-grip handle.Proform Nylon Composite Construction 67571Specifications: Feature/Benefit The PROFORM piston installation tool features nylon-composite construction so you can knock away all night without any damage to your expensive pistons! Tool Type Piston Installation Tools Category Piston Install. Tool Finish White Description_ABR Piston Tool Description_SHO Piston Install. Tool Description_INV Piston Installation Tool Description_INV Heavy Duty Description_DEF Mallet Description_ASC Engine Piston Installation Tool Description_ASC Heavy Duty Model Description_ASC Nylon Composite Construction Description_LAB Engine Piston Installation Tool Description_LAB Heavy Duty Model Description_LAB Nylon Composite Construction Description_DES Engine Piston Installation Tool Description_DES Heavy Duty Model Description_DES Nylon Composite Construction Description_EXT Engine Piston Installation Tool Description_EXT Heavy Duty Model Description_EXT Made From Nylon Composite Construction Description_EXT White in Color Description_EXT Weighs Under 2 pounds and Features A Steel-Shot Filled Chamber Description_EXT Easy Grip Handle For Comfort Description_EXT Sold Each Description_MKT The PROFORM piston installation tool features nylon-composite construction so you can knock away all night without any damage to your expensive pistons! This affordable tool weighs just under 2 pounds, features steel-shot filled chamber, and an easy-grip handle.