2-inch long of brass piece to connect 1" OD tubing, with .0875" OD on one end, and .085" on the other. Can be used to connect tubing at different thicknesses.
Fittings with inserts are made to fit with .050" wall tubing. They do not fit with pipes. When you purchase flush fittings without tubing, please measure your tubing for OUTSIDE diameter and wall thickness to ensure material will fit together.