The self lock evolution tape measures have a patented self-locking blade mechanism that allows the tape to pull out smoothly and then automatically locks itself in place. Once you have completed your measurement, simply press the release button and the blade retracts smoothly into the case. It does not stop there, this tape measure is loaded with additional features like; printed fractional graduations, high visibility blade color, double sided printing and an ergonomic case design that fits comfortably in the palm of your hand. This tape measure is built for any job, big or small! Self locking blade stays extended until user returns with push button for easier one person measuring/marking New case design is more compact and fits easily in hand High visibility blade color allows for easier reading and marking Dual end hook and double sided blade printing allow for more versatile measuring Series Name: Self-Lock Evolution Sub-Brand: N/A Blade Width(s): 3/4-in Length Measurement: 12-ft Auto Lock: Yes Belt Clip: Yes Blade Standout: 5-ft Magnetic: No Measure Type: Standard (SAE) Package Quantity: 1 CA Residents: Prop 65 Warning(s): No UNSPSC: 27111800