XRP OFFERS TWO SERIES OF ALUMINUM NPT PIPE TO TUBING ADAPTERS THAT ALLOW FOR A QUICK AND INEXPENSIVE WAY TO CONNECT TUBING OR HOSE WITH AN EASY TO USE HOSE CLAMP IN VERY LOW PRESURE APPLICATIONS. THE 840 SERIES IS DESIGNED FOR USE WITH HOSE OR TUBING WITH A FULL FRACTIONAL INSIDE DIAMETER. THE 850 SERIES IS ESPECIALLY DESIGNED FOR USE WITH THE REDUCED INSIDE DIAMETER OF THE STAINLESS BRAIDED OR BLACK CLOTH CPE RACE HOSE.THE 840 SERIES IS A BLUE FINISH AS THE 850 IS OF A BLACK FINISH.