Feature 1、Prime Material: This coil power supply is made of military grade 1.6MM double sided fiberglass board, durable and not easy to damage. 2、Stable Performance: Adopting factory customized large inductors with consistent parameters for more stable performance (30MM large magnetic ring, wound with 1.2MM pure copper wire). 3、High Accuracy: All resistors use five ring compact resistors (five ring accurate resistors have small error and work more stably). 4、Add Tin: The bottom part of the circuit board over high current all add tin, can be used for induction heating. 5、Lightweight and Practical: This coil power supply is small in size and light in weight, easy to use, practical and efficient, bringing good using experience. Item Type: Coil Power Supply Weight: 167g / 5.9oz Material: PCB, Copper Package List 1 x Driver Board 4 x Copper Post Screws 4 x Nut