The class II blade is 32mm wide which gives it a super standout of 3m which is ideal when working alone The strong thumb lock secures the blade perfectly in place and the Nylon coating on both sides of the blade protects the tape from abrasion and corrosion The unique nylon wrapped blade is highly-wear resistant, anti-rust, acid-resistant, alkali-resistant, water-proof and fire-proof The claw magnetic hook is helpful for both side measurement The bottom of the tapes casing has a blade guard to protect the triple riveted end hook when returning to its case