You are ordering a Haltec H-5275 standard bore flow lock on air Chuck. Connects with a 1/4” NPT thread size.
Haltec H-5265 Standard Bore Lock-On Air Chuck,Gold Standard, Gold
CH-340-OP Haltec Air Chuck Standard Bore OPEN
Haltec H-5265 Standard Bore Grip Lock On Open Flow Air Chuck Rated for 0-300...
Haltec H-5265 Standard Bore Grip Lock On Air Chuck 0-300 psi 1/4 NPT