DIMENSIONS: 2.09 inches L x 7.09 inches W ACCURACY: Each level has an integrated bubble level for precise measurement and the Reference Level has a magnetic bottom for added stability DURABLE: Precision machined aluminum with an anodized finish VERSATILE: Adjustable barrel clamp level fits around even the largest diameter barrels, including shotguns NON-DESTRUCTIVE: Barrel Clamp Level features non-marring pads to ensure no damage is done at the contact points INCLUDES: (2) calibrated machined aluminum level housings, (1) foam-molded storage case GUARANTEED: This product is covered by a limited lifetime warranty provided by Wheeler. Please contact Wheeler customer service for assistance