The Skynet 8-in-1 Prebuilt Coils Set by Coil Master is designed for use with rebuildable atomizers (RDA, RTA and RDTA) and contains a collection of eight prebuilt coil variations. Each coil is machine twisted for precise and consistent building material, presenting different types of structures optimised for flavour production and a high vapour producing performance. Each coil sets comes in an efficient portable box to carry 6 individual coils for each type of coils, for a total of 48 ready-to-use coils that are neatly organised for added convenience and transportation.