Threading Machine Die Head Maximum Compatible Pipe Size 6 in Minimum Compatible Pipe Size 5 in Head Opening Type Self-Opening Thread Type NPT Compatible Thread Direction Right Hand Compatible Dies Universal Compatible Threader Type Threading Machine Compatible Threader Series 31XM67 Through-the-Head Oiling Yes Application Pipe Compatible Grainger Part Number 31XM67 Die Head Type Universal Die Material Cast Aluminum Features Self Opening For Use With 31XM67