Motion Pro Polaris Switch Relocation Kit Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools.Interchangeable piston adapters.Made of durable 6061 aluminum.Fits all piston pins from 12 mm (1/2 inch) to 24 mm (1 inch).Works on both full skirt and short skirt (slipper) pistons.Non-marring aluminum pin