Image 1 of 1 P-200N US$4.00 Natural Tefzel ferrule for 1/16” tubing. Fits in P 215 and P 230 Idex 1/4 28 fittings.Catalogue # P-200N Quantity: Add To Cart Added! Natural Tefzel ferrule for 1/16” tubing. Fits in P 215 and P 230 Idex 1/4 28 fittings.Catalogue # P-200N