Perma-Loc 1/2" x 8mm Barb w/ Valve Pinit $6.81 Quantity discounts available QuantityPrice SKU: IG17613 Retail Price Quantity -+ Add to Cart Details Perma-Loc fittting that adapts 1/2" tubing directly to 8mm tubing, with an integrated on/off valve.Center of fitting swivels. Details Back DetailsPerma-Loc fittting that adapts 1/2" tubing directly to 8mm tubing, with an integrated on/off valve.Center of fitting swivels.