Knocking 1 star off for product description. Throughout entire description, I only saw 1/2" lines. So I thought it was 1/2" throughout the entire product. After receiving, quickly found out that the inlet port is 3/8" (F). Had to go to the Realcraft website to see entire specs. Sure enough, the A5850 OLP has a 3/8" (F) inlet. Amazon should list the entire specs. I shouldn't have to go the Realcraft website to find them.
I should have bought the 7850 OLP, which has the 1/2" (F) inlet, 1/2" hose and a hose end of 3/8". I wouldn't have to buy any extra fittings to make the hose work because I have 1/2" air supply at reel and 3/8" (F) Milton couplers. With the A5850 OLP, I have to buy two 3/8 MNPT x 1/2 FNPT adaptors for the inlet and the hose end. In hindsight though, the cost of the A5850 OLP and two adaptors is still less then the 7850 OLP. I hate using adaptors though, I think I would have spent the extra cash to avoid using them.