From the Manufacturer
The Self Lock Series of tape measures is a unique line of tape measures. The series features 12-foot x 5/8-inch, 16-foot x 3/4-inch, 16-foot x 1-inch, 25-foot x 1-inch, 25-foot x 1-inch inch/Engineer scale. The Self Lock Series features a unique self locking mechanism that allows the blade to extend smoothly as well as a push button release that insures complete control when retracting the blade. This is the ideal measuring tool for anyone from the do it yourselfer to a professional tradesmen. The series also provides an impact resistant rubberized case and a nylon coated blade for maximum durability.
Steel blade with nylon coating. Self locking blade allows you to pull blade out and it locks itself, push button to retrieve. Impact resistant ABS with molded rubber grip. Built in rubber bumper. Ergonomic Hi Vis green case and black rubber grip. No. SL28