Gibraltar Hardware SC-ML1 4-Pack of 1 in. Chrome Memory Lock The SC-ML1 1 inch Memory Lock is used to memorize the positioning and height placement of an accessory tube connected to a rack or stand by a multi clamp so that your set up goes back together the same way every time. It will fit over any 1in. downtube. Tightens with a drum key bolt. Each tab is 3/8in. wide, 3/32in thick, and 1/8in. long. • MFSKU SC-ML1 • UPC 736021335271