Thogus Polyethylene Tube Fitting, Coupler, Black, 3/16" Barbed (Pack of 10) Connects hose in a straight run Fitting connects to hose on both ends Polyethylene is chemically inert, resists cracking, and is a barrier to gases, vapors, and moisture Barbed fitting creates a tight seal on flexible and semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule (sold separately) Meets standards set by NSF International and RoHS for health and safety