With the handheld, sleek designs from Nice Steams, it is easy to lose parts. Nice Steams offers a replacement topper for your vape pen that includes the 1.8ohm long life, low temp sealed porcelain heating element. Just like the Z3 Concentrate Pen, the Z3 Atomizer is waterproof and engineered to last a lifetime because of its stainless steel construction. This vaporizer accessory is made in the USA and can be used with 510 threaded batteries/mods. Visit the Nice Steams Website (nicesteams.com) for more info and an operator manual.