Hard to Find Fastener 014973322212 Coupling Nuts, 1 2 20, Piece 4 Item Package Quantity:1 For reaming cylindrical shape holes Size:1 16" 24 Rods For reaming cylindrical shape holes high grade polyethylene construction Use to raise sprinkler heads above grass level Cut to desired length Not for use under continuous pressure 1 2" x 2 1 2"Orbit Irrigation 37017 1 2" X 2 1 2" Riser Extension Specifications: Description: 1 2" X 2 1 2" Cut Off Riser ExRegion(s): North We stock a wide variety of fasteners ideal for many applications arround the home Not all fasteners are applicable for all applications so be certain to test thouroughly and get the opinion of a licensed building or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person