The CRL Equalizer Excalibur Standard Kit is a small lightweight, air powered version of the electric powered CRL Equalizer. It is designed to cut the urethane bonding that holds most modern auto glass in vehicles. The .020 inch (.5 millimeter) thick blade reciprocates inside a metal sheath which protects the dash, garnish moldings, and headliner. The blade is never really exposed because as it leaves the sheath it enters the urethane. With the CRL Equalizer Excalibur you can save encapsulated glass and bonded metal moldings.