PowerLock 25' Tape Measure features a 1" wide, Mylar-protected blade with a 7' standout. Heat-treated spring stands up to repeated use. 16" and 19-1/5" stud center markings simplify framing jobs. Secure blade lock doesn't creep during measurements. Three-rivet, corrosion-resistant hook allows accurate inside/outside measurements. Tape measure offers positive blade lock and attached belt clip. Tru-Zero hook acts as a pivot for drawing circles and arcs.