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: 10pcs Vape Style: RDL/DL Fit for: RDA/RDTA/RTA/Boro RTA Gauge: FUSED CLAPTON SANDVIK Ni80 2-27/37GA 3mm 5/4LP 0.36ohm (Advised Watts: 27-45w) FUSED CLAPTON SANDVIK Ni80 2-28/38GA 3mm 5/4LP 0.44ohm (Advised Watts: 21-35w) FUSED CLAPTON SANDVIK Ni80 2-29/40GA 2.5mm 5/4LP 0.48ohm (Advised Watts: 15-27w; Boro Tank) Package: Simple Packing