Home / Drilling & Tapping / Tapping / Tap, Acme Tandem, 7/8″ – 6 TPI Right Hand View cart “Ettco 1-B Tapping Head, JT 6 Shank” has been added to your cart. Tap, Acme Tandem, 7/8″ – 6 TPI Right Hand$75.00 1 in stock Add to cart Category: Tapping Description Description Acme Tandem Tap, 7/8″ – 6 TPI Right Hand Related products 1-13/16″ Hex Diameter Die Stock, 2 Available $19.95 Add to cart Procunier #3 Tapping Head, Morse Taper #3 Shank, Fits Clausing 20″ Drill $249.00 Add to cart Procunier #4 Tapping Head w/ Morse Taper #4 Shank $395.00 Add to cart STM JSN7 Tapping Head w/ R-8 Shank $149.00 Add to cart