Patented belt lock (Autolock mechanism) for optimal control and longer life of the roller conveyor Comfortable and robust bi-material housing Blade Armor coating on the first 80mm for doubled life Tape stands 3. 3 m out for further and easier measuring Tape with Mylar® coating is up to 10 times more resistant to abrasion than standard measuring tapes With replaceable magnetic and XL hooks for even greater efficiency With secure storage for the hooks - extra hooks are no longer lost during use Accuracy: class II