Index Bearing Cam Block for Dillon XL650 is easy to install. This is a premium upgrade that smooths the action for the index cam and removes the need for grease on the index pawl. Armanov Index Bearing Cam Block for Dillon Precision XL650 replaces the steel block that causes friction and drag. Compatible with the current model Dillon Precision XL650 progressive reloading press. One aluminum bearing block with a sealed ball bearing included. Made from aircraft grade aluminum. Anodized in blue.