Guhring Powertap, 1/4-20 Spiral Flute tap, HSS-E (Cobalt), Oxide Review January 17, 2019 Kangaroodle No Comments Threading Taps This fits your . Make sure this fits by entering your model number. For blind holes (spiral flute) 2B/3B class of fit HSS-E (Cobalt) substrate Chamfer Form C › See more product details Post navigation ← Lift The Dot Snap Fastener’s, Extended Length, Socket & Backing Plate, 20 Pcs ReviewRatcheting Keychain Tool,Tiny Ratchet Multi-Tool Keychain Bottle Opener EDC Hex Wrenches Tool Review →