Never have to wrap yourself again: Includes 8 different prebulit coils types for each evaporator to try new windings: ribbon twist, mix twisted coils, quad coils, hive coils, fused clapton coils, tank track coils, tiger coils, clapton coils. High Quality Workmanship- Material: iron chrome aluminium alloy, melting temperature: 1400 / 2550 inner diameter 3mm, durable and lightweight. Practical storage box: plastic box keeps each size separate and organised, with the plastic box you can manage 120 pieces or store your other coils together, very convenient to bring with you. A must for every steamer: this coil kit is great for any steamer, self-winder, who is too lazy to wrap yourself, or the beginner who does not know how to do, this versatile set is well helpful. Easy to use: very easy to install, the hookability is good and comparable to other ready-made coils, the best prepared coils for your RDA and RTA!