Threading Machine Die Head, Maximum Compatible Pipe Size 1 in, Minimum Compatible Pipe Size 1/4 in, Head Opening Type Quick Opening, Thread Type UNC, UNF, Compatible Dies 500B, Compatible Threader Series 1215, 300, 535, Compatible Mfr. Model No. 97045, Application Bolt, Compatible Grainger Part Number 25XC43, Fits Brand Ridgid, Maximum Bolt Size 2 in, Minimum Bolt Size 1/4 in