Palmer Micro Rock Regulator for Autococker front blocks. Micro Rock, same performance and reliability as the venerable Rock regulator but no relief valve. Recommended for regulated air supply and "low pressure" equipment. --------- User serviceable. OD: 0.875" (7/8") --------- Length: 2.3" --------- Output: 10-32 female --------- Input: 1/8" npt 27 male --------- Max input psi: 1500 --------- Psi out: 0-300 --------- Weight: 2.5 oz