Features COMPATIBILITY — Compatible with Grip-O-Matic pullers or Push-Pullers, Fan Blade, Gear and Bearing Pullers. FUNCTION — These Shaft Protectors are used to protect shaft centers from distortion when extreme pressures are applied with either Grip-O-Matic pullers or Push-Pullers. Male and female locators help keep the shaft protector in place during use. SUPEIOR MATERIAL— 6 Piece Shaft Protector set is a sturdy build, black powder-coated finish on steel construction. Anti-corrosion and not easy to rust, ensures an unparalleled long lifespan. .