Etronic 12-Foot-by-5/8-Inch Tape Measure (Auto Lock, Magnetic Hook, Double Sided Blade, Nylon Bond Blade) Auto lock for easy tape retraction control and longer blade life Magnetic dual-end hook measures accurate every time, securely holds steel studs, emt, threaded rod Nylon bond blade protects blade markings from wear and tear up to five times longer than other tapes Double-sided printing blade provides precise marking, line drawing, and easy measurement readability Impact resistant shock absorbing rubberized grip for maximum protection on tape from drops or abuse