Our 7" billet sand seal pulleys are right off the "Top shelf". Machined from 6061 T-6 aluminum billet and finished with mill spec anodizing, these pulleys will last a lifetime. The sand seal surface utilizes a pressed on, micro-polished, stainless steel sleeve for a perfect seal. Timing marks and CB logo are CNC engraved into the pulley, you can't rub off these numbers. The seal and holder fit into a VW engine case without the need for machine work. Comes complete with a Chrome Pulley Bolt with Washer, Sand Seal, and a Pulley Shim Kit.