Check the listing for details. Astro Pneumatic 3037 Pulley Assembly - Rubber - Inc 1,2,3,61 3037PAR. Color: Silver, Condition: New. Listed at 25.57 USD. Features and Benefits:�Includes Astro�s wider rubber coated roller and bracket to upgrade old model 3037 1/2x18” belt sanders or replace worn components�Wider rubber coated roller improves belt life by up to 40%�6-piece assembly includes, roller, bearings, spacer, screw and bracketThe Astro 3037PAR (Pulley Assembly ‐ Rubber) for the popular 3037 1/2x18” belt sander is an assembly that replaces current rubber rollers and end bracket or upgrades older 3037�s that we made with a thinner steel roller bearing on the end. This improves bear wear and helps to avoid the tool skipping off a surface when the end of the tool is pressed into it. Perfect for spot weld removal and getting the most out of your belts.