Rear Centering Assembly Compatible Threader Grainger Part Number 1VXG8 3Z987 4CPC4 Compatible Threader Manufacturer Part Number 15682 15722 41855 Compatible Threader Series 300 Product Type Rear Centering Assembly 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