Adapter, 3/8 In., Compatible Grainger Part Number 1VUR7, Compatible Threader Manufacturer Part Number 819, Product Type Nipple Chuck Pipe Adapter, Maximum Compatible Pipe Size 3/8 in, Features Holds Short or Close Nipples for Threading, Fits Brand Ridgid, For Use With Nipple Chuck Kit, Impact Rated No, Outside Diameter 3/8 in