Features: Engineered with a square shank designs for secure grip and a high strength alloys blade, this grooves punch tool delivers precise drilling in wood, drywalls, and PVC for 86 type junction box. The replaceable high carbon steels bit ensures extended durability during repetitive punching tasks, while its standardized size guarantees seamlessly compatibility with universal switche socket frame. Ideal for electricians, renovations contractors, and hands on DIYers requiring quick socket installation or replacement in residential/commercial space. Streamlines switches box cut out during home rewiring, office partition setups, and commercial construction projects requiring flushing mount electrical fixtures. Ergonomic knurled handle minimizes slippage during vertical/horizontal punching motions, ensuring operations safety and millimeter perfect apertures alignment. s Specifications: Component: High Carbon Steels Color: Silver Size:Approx. 85x45x180mm/3.35x1.77x7.09in Quantity: 1 pc Package Includes: 1pc note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color the item.