Chuck Jaws, Compatible Grainger Part Number 1VXG8, 3Z987, 4CPC4, Compatible Mfr. Model No. 15682, 15722, 41855, Compatible Threader Series 300, Product Type Chuck Jaw Set, Fits Brand Ridgid, For Use With 300 Compact Pipe and Bolt Threading Machine, 300/300A Power Drive, 535 Manual Pipe and Bolt Threading Machine, Impact Rated No, Number of Pieces 3, Package Quantity 3