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 Material:Nichrome Wraps ID: 2.5mm Vape Style: DTL/MTL Fit for: Boro/RTA Gauge: 2-29/40 0.48ohm Ni80 5/4LP RDL;15-25W 2-30/40 0.58ohm Ni80 5/4LP MTL; 12-21W Package: Simple Packing