Wholesale Closeout Rubber Swivel Lead-in Hose. The Amflo 3/8 inch x 30 inch Red Rubber Lead-In Hose is made to help absorb the shock loads produced by air powered tools. A ball swivel fitting is included to help limit kinking. The lead-in hose has a 300 psi working pressure and comes bend restrictors to increase hose life. Helps absorb the shock loads produced by air powered tools to the air coupler Helps eliminate premature failure to the coupler 1/4 in. NPT male ball swivel x 1/4 in. female NPT end fittings 3/8 in. I.D. Rubber construction Includes ball swivel fitting to help limit kinking