Check the listing for details. MK Machining Ultra Low Profile Polymer Scope Level. Condition: New. Listed at 20.00 USD. Requiring a very small amount of scope space, and featuring a slim construction, this level is simply spread around the scope tube and tightened via a 4-40 bolt into an expanding threaded brass insert. It is compatible with nearly any mounting setup, and installs without ever needing to remove your scope! Scope level features a cutout in the top to provide light to the level vial, while keeping it protected. EASY INSTALLATION: Requires only one bolt to tighten!DURABLE PETG CONSTRUCTION: Made with a metal thread insert for increased strength.PERFECT FIT: Fits under the lowest mounted scopes and compatible with nearly any mounting setup.MADE IN USA.LIFETIME WARRANTY.Bubble level extends approximately 0.6" off of the rail. About .6-.8" of clearance. International buyers ? please note: Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility.Please check with your country's customs office to determine what these additional costs will be, prior to bidding or buying.