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 Gauge: MTL STAPLE SANDVIK Ni80 4-.1*.3/40GA 2.5mm 5/4LP 0.52ohm MTL STAPLE SANDVIK SS316L 4-.1*.3/40GA 2.5mm 6/5LP 0.42ohm MTL STAPLE SANDVIK KA1 4-.1*.3/40GA 2.5mm 5/4LP 0.68ohm Package: Simple Packing