The Stanley 33-430 1" Blade x 30' Powerlock® Tape Rule features a blade that is protected with clear tough film of Mylar to reduce friction and provide longer blade life. The lightweight comfortable case is durable with easy to operate thumblock that holds the blade firmly in place. The belt clip is fastened to back of case and includes a three rivet hook for longer blade life.7' 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 16" and 19.2" stud center markings simplify framing jobs Corrosion-resistant Tru-zero end hook for accurate measurements