Use .580 Compression Elbows to make 90 degree turns in .580 od poly tubing or soaker hose. Poly tubing, or soaker hose may kink and cut off your flow of water if you try to make a tight turn without an elbow.
The Black and yellow compression fittings are unique, as besides being compression they also have male hose threads to make them very versatile.
Note: We have our customers tell us that our 580 fittings fit the Flexon soaker hose kits available in Lowes. Customers also tell us that the 580 fittings fit the 3/8" Miracle Gro brand of soaker hose.