Reamer Blade, Compatible Threader Grainger Part Number 4CW39, Compatible Threader Manufacturer Part Number 26092, Compatible Threader Series 1224, Product Type Reamer Blade, Maximum Compatible Pipe Size 4 in, Minimum Compatible Pipe Size 1/4 in, Fits Brand Ridgid, For Use With 1224 Pipe and Bolt Threading Machine, Impact Rated No