1 1/16 - 12 UNF (3/4" SAE) Thread. Hydraulic Female Flat Face Quick Coupler - 1 1/16" -12 UNF (3/4" SAE) JCB 332/E4161. Threads: 3/4" SAE (1 1/16" - 12 UNF). Male Flat Face Quick Release Coupling. Locking: Radial Balls.
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