Aqua Locks Concrete Staples (for crack repair): Part Number ALK-10 (All kits come with 10 staples (2 sizes included: 4" & 8"), 2-part epoxy, 2 templates & an Allen wrench to tighten post-tensioning screw). The pins are threaded to grip the concrete/epoxy. The BEST concrete staples PERIOD! Patented. 1-minute installation YouTube video: https://www.youtube.com/watch?v=Im-t-H-Xh0s