Anti Cant Indicator- Maintaining a level firearm is vitally important when shooting. Being a few degrees off can impact the shot. The Anti Can Indicator from Wheeler Engineering offers an indicator to ensure this does not happen. Simply attach the indicator to the scope tube (offered in both 1 inch and 30mm) and utilize the level bubble to guarantee a perfectly vertical shot. Increases consistancyIndicates precise repeatable level gun positionEasy to view from shooting positionAttaches to scope tube1 inch model-7557123mm model-766112