... price and quality; 2: Watertight,crushproof,and dust proof ,Protection class IP67. Tool case1. Watertight, crushproof, and dust proof 2. Easy ... done for most of products, such as drilling holes, adding or changing PCB pillars (not free in charge).4:All the ... before order. tool case,Watertight,crushproof,and dust proof ,Protection class IP67.