Water protection/NEMA standard 1.26.5 (IP54). Instantaneous Torque up to 12,000 in-lbs. @ 80 psi. Maximum Operating Speed up to1,650 rpm. Six bore sizes ranging from 0.875 to 1.938 inches. Positive engagements in random positions. Use Single & Double Flexible Couplings for in-line applications to accommodate misalignment, 6 Models offer design flexibility. Sealed, radial ball bearings. Pilot Mount design with tapped mounting holes. Thru-shaft mounting design uses a full-length keyway. Ability to mount a pulley, sprocket or gear on the clutch. 8.25 inch hose included. Air Engaged, Spring Released.