Hey you build enthusiasts, if you are looking for a reliable & comprehensive tool kit for your builds fun, here we bring you a nice one - Geekvape 521 Master Kit V2, which is one of the most brilliant accessory kit to help you create the best and safest coils. It comes with 6 kinds of useful DIY tools, including 521 tab mini, ceramic tweezer, nipper pliers, diagonal pliers, folding scissors and Coil Jig Set. With 521 Master kit v2, you can enjoy more amazing DIY vape experience. The 521 Tab Mini Coil Master is a mini version of the original, which retains the solid build quality, accuracy level, as well as the ability to test and fire while integrating a smaller size, added with battery level indicator, and USB port charging capability. It really keeps user-friendly in mind, featuring an across-the-board functionality in a compact chassis with minimalist design. This 521 Tab Mini would be a nice tool to any dedicated builders. 521 Tab Mini Parameters Size: 83 mm x 61 mm x 24 mm Resistance measuring range: 0.01 – 9.9Ω Lowest resistance rate: 0.1Ω Connection : Spring loaded 510 pin Battery: Lithium 18650, 3.7V (not included in the product) Input voltage: 2.7 - 4.2V Output voltage: 1.8 - 4.2V Quiescent current: 5 - 14 uA Burning protection: 14.5 - 15.5s Output wattage: 31 - 33W More info, please visit: http://www.heavengifts.com/GeekVape-521-Master-Tools-Kit-V2.html http://www.heavengifts.com/GeekVape-521-Tab-Mini-Coil-Master.html We are now offering 10% off coupon code "AHG10" for all products, please feel free to use. BTW, what tools are you using for building right now? How do you think about this 521 Master Kit V2 by Geekvape?