Locking Welding Clamp, 2 3 4 in Jaw Opening, 9 in Long no checkout hard chrome plated blades Rust resistant for hard chrome plated blades Rust resistant for blade longevity Scriber for easily marking surfaces Die cast handle Easy read vial 7 ft blade standout Mylar® polyester film extends life of entire blade Chrome high impact ABS case is job site tough Secure blade lock won't creep during measurements Corrosion resistant Tru zero end hook for accurate measurements U shaped jaws provide enhanced visibility and more working space Holds work in proper alignment Turn screw to adjust pressure and fit Constructed of high grade heat treated alloy steel Guarded release trigger quickly unlocks and protects from accidental release