Features: *This Mortising Chisel set is great for drilling square holes in wood *Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries. *The whole drill is heat treated,offering higher hardness. *Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements. Specifications: Product Name: Square Hole Saw Mortising Chisel Material: high-speed steel Color: Silver Optionalsize: 6MM，6.4MM（1/4），8MM（5/16），9.5MM（3/8），12.5MM，12.7MM（1/2） Application:Mainly used for carpentry, applicable to the construction, installation, decoration, decoration industry use. Quantity:1pcs Package Contents: 1 x Square Hole Saws Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. 【Efficient Square Hole Drilling】The Mortising Chisel set is specifically designed for creating precise square holes in wood. It greatly reduces the labor intensity of construction workers and expedites the construction process, resulting in cost savings for various industries such as construction, installation, renovation, and decoration. 【For Durable and Heat Treated】The entire drill bit set undergoes heat treatment, superior hardness and durability. This enhances its longevity and makes it suitable for heavy-duty use in demanding woodworking projects. 【Multiple Sizes for Versatility】With various size options available, including 6MM, 4MM (1/4 inch), 8MM (5/16 inch), 9.5MM (3/8 inch), 12.5MM, and 12.7MM (1/2 inch), this Square Hole Auger Drill Bit Set can be used with different square hole machines, allowing you to achieve precise results according to your project requirements. 【Material】Crafted from high-speed steel, these drill bits offer exceptional strength, toughness, and resistance to wear. They are built to withstand the rigors of carpentry work, long-lasting performance and reliable results. 【Wide Application】 for carpentry projects, this Square Mortising Chisel set is suitable for use in construction, installation, decoration, and various other woodworking applications. It is a and essential tool for professionals and DIY enthusiasts alike.