John Guest FI Tap Adapter by John Guest $6.60 1/4" x 7/16" - $6.60 5/16" x 7/16" - $7.20 3/8" x 7/16" - $7.20 1/4" x 7/16" 5/16" x 7/16" 3/8" x 7/16" JG FI Tap Adapter 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Genuine John Guest fittings, made in the U.K, are the original push-fit fittings. Please check sizing before placing order.