Stanley 0-33-158 PowerLock Tape Measure 5m/16\' The Stanley 0-33-158 \"PowerLock\" Tape Measure 5m/16\" has 2 rivet hook slides to allow for its own thickness, a special slot in the hook allows use of nail as a pivot to draw circles and arcs. FEATURES 2 rivet hook Myla polyester film coated blade Heat treated spring for longer life Rivets in blade ends prolong blade life Positive blade lock Carded and lockable Belt clip for ease of storage Tru zero end hook moves to compensate for accurate inside and outside measurements SPECIFICATION Length: 5m / 16\' Width: 3/4\" Weight: 300 g