Flo Cap by Trinity
From Trinity: The Trinity Flo-Cap is a highly innovative accessory, in that it’s the first interchangeable top cap that allows you to offers multiple drip tip material options in one device.
Stainless steel kit includes a stainless base, a stainless drip tip, and a Pyrex drip tip.
Delrin kit includes a delrin base, a Delrin drip tip, and a Pyrex drip tip.
Fits: Patriot, Plum vail, Vulcan, Orion, Mako, Haze, Clt, Troll, Petri, Rem. Tobh and Asmodela (single o ring on top groove) For Mutation Xv4 use thicker small o-ring.