Ridgid 47750 Replacement Pipe Die, For Ridgid Machine Universal Heads, 1 in to 2 in Pipe, Aluminum Steel, 4 PK 2KYP9 while it's “turn to engage” while it's “turn to engage” feature locks in plug and can be used to prevent accidental disengagement of critical equipment Surebonder 5685 5A195 Threading Machine Die Heads and RIDGID Model# 504A For Nominal Pipe Size 1 in to 2 in Compatible Pipe Size 1 in to 2 in Pipe Threading Product Grouping Pipe Threading Replacement Dies Pipe Threading Item Pipe Dies Set for Threading Machine Die Heads Threads per Inch 11 1 2 Die Material Type Alloy Steel Pipe Thread Type NPT Thread Direction Right Hand For Use With 4CW40