Constructed out of American DuPont™ Delrin® & Made In America.
There are 3 types of Knurl tips. Red, Blue & Black.
All colours are based on our best-selling Delrin in 3 years time. The Delrin Crispy Caps are made out of the world-famous American DuPont™ Delrin®
So it has a higher heat, moisture, impact, creep resistance & higher tensile strength than any other Delrin drip tips on the market & we back them with our lifetime warranty.