Square Tenon Drill Mortise And Tenon Drilling Woodworking Square Hole Drill

High efficiency: the woodworking bit is equipped with a long core and square chisel which is easy to lock the hole on the wood so as to obtain different mortar quickly. And it s labor saving. Note: it is not recommended to use in bearing wall stainless steel plate and tempered glass. Please attention to when using. 1 x drilling tool of application: suitable for drilling square holes in wood with machine or accessories. It is also suitable for drilling machine. It is recommended to use wood with density board pressing board and wood. Note: these square drills are not suitable for any hand drill. Make sure that the wood floor is at a 90 angle to the drill bit. Materials: these square hole drills are made of high speed steel heat treated with high hardness bits and sharp square chisels with long service life Size: 4 different sizes are available for you to choose. hole 1 / 4 inch (6.4 mm) 5 / 16 inch (8 mm) 3 / 8 inch (9.5 mm) 1 / 2 inch (12.7 mm). See the picture for more details it s more intuitive. The drill bit is easy to maintain and can be protected by most of these boxes.