Spiral point machine tap with chamfer form C with a 2-3xP semi-bottoming lead, for Unified National Fine thread UNF 5/8in with 18 TPI and 2B class of fit... High Speed Steel. Ground Thread . Titan USA - Spiral Point Tap: 5/8-18 UNF, 4 Flutes, Plug Chamfer 5/8-18 Tap 5/8-18 | 45922 | Small Shank Spiral Point Extension Taps Spiral Push Drill YITAHOME 55 Convertible Sofa Bed, Velvet Sleeper Sofa with Pull-Out Bed, 3-in-1 Futon Couch with Reclining Backrest and Side Pocket, Modern Loveseat · KMF 340876