TAPMATIC TAPPING HEAD NCROA W/ 1 " SHANK | eBay
Tapmatic Model 50X, No. 6 Min Tap Capacity, 1/2" Max Mild Steel Tap Capacity, JT33 Mount Tapping Head 22100 (J421), 22000 (J422) Compatible, Includes Tap Clamping Wrenches, for Manual Machines - Walmart.com