These Threaded Tips are CNC with stainless steel. With the specialized thread it alllows you to easily attach the tips by hand. Since there is no allan screw like the normal style grips these tips never get damaged. No more scew marks on your tips. Available in: 3, 5, 7, 8-9, & 14-18 Round Tip. Special Note:These Tattoo Tips are Threaded, and can only be used with our Threaded Grips.