This Black Cap Assembly by Adler Industries is for the Mikro BF Titanium RDA.
Made of black PEI (polythermide), the generic family that Ultem and PEEK belongs to. PEI has much higher heat capacity and reflectivity than other plastics such as Delrin, acrylics, or polycarbonates.
Comes with the top cap, flavour trap cap, and two microbore drip tips, one for use with the trap cap, and one for use without.
WARNING: It is highly recommend that you fully clean out this product before the first time you use it. While the factory does a decent job at removing dust, shavings, machining lubricants and greases, there is still the potential for trace elements to remain, and it is best recommended that you do an additional cleaning to meet your standard of cleanliness.