The pre-built coils for super-easy RBA/RDA/BORO building. Convenient when you're not in the mood for manually wrapping your own coils. Coilology prebuilt coils can eliminate the hassle with its machine-accurate fine work, Made with SANDVIK alloy for superior performance, offering remarkable flavor intensity and immense vapor production. Brand: Coilology Unit: 2pcs Wraps ID:2.5mm Resistance:0.38ohm Gauge:3-30/38 4lp Ni80 Fit for: Boro/RTA Advised Watts Range (Single):18-30W Package: Simple Packing