Parts List: 1×1-3/8inch Woodworking Hole Opener 1×1-9/16inch Woodworking Hole Opener 1×1-3/4inch Woodworking Hole Opener 1×2inch Woodworking Hole Opener 1×2-3/8inch Woodworking Hole Opener 1×2-3/4inch Woodworking Hole Opener Highlight description: [High Hardness Material] Our hole opener drill bit is made of high-quality tungsten steel material cutter head and sturdy hard steel blade, which has high hardness. It has nano-coating coverage to improve high temperature resistance of the drill body and reduce wear and adhesion. It is rust-proof and durable. [What You Receive] The package includes 6 hole openers with drilling head diameters of 1-3/8inch, 1-9/16inch, 1-3/4inch, 2inch, 2 -3/8inch, and 2-3/4inch. The hex shank diameter is 8.5cm, meeting different needs. [Hex Shank Design] Our wood drilling hole opener adopts hexagonal shank design, which is compatible with various machine models, such as hand electric drills, lithium electric drills, and bench drills. Note: It is best to use a machine with good fixation performance for drilling operations. [Widely Uses] Our woodworking drilling hole opener is suitable for deep hole operations in wood products. It is widely used for solid wood, MDF, particle board, density board, particle board, etc. It is prohibited to be used on ceramic tiles, concrete, metal and glass. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service. Detailed description: Product Name: Hole Opener Drill Bit Material: Cutter Head: Tungsten Steel Connecting Rod Part: Ordinary Steel Size: Hexagonal shank diameter: 8.5mm 1-3/8inch: cutter head diameter 35mm, post length 85mm, drilling depth 55mm 1-9/16inch: cutter head diameter 40mm, post length 85mm, drilling depth 55mm 1-3/4inch: cutter head diameter 45mm, post length 85mm, drilling depth 55mm 2inch: cutter head diameter 50mm, post length 84mm, drilling depth 55mm 2-3/8inch: cutter head 60mm, post length 84mm, drilling depth 55mm 2-3/4inch: cutter head diameter 70mm, post length 89mm, drilling depth 60mm Color: Black Notes: 1.It is best to use a machine with good fixation performance for drilling operations. 2.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 3.Please allow slight dimension difference due to manual measurement. [High Hardness Material] Our hole opener drill bit is made of high-quality tungsten steel material cutter head and sturdy hard steel blade, which has high hardness. It has nano-coating coverage to improve high temperature resistance of the drill body and reduce wear and adhesion. It is rust-proof and durable. [What You Receive] The package includes 6 hole openers with drilling head diameters of 1-3/8inch, 1-9/16inch, 1-3/4inch, 2inch, 2 -3/8inch, and 2-3/4inch. The hex shank diameter is 8.5cm, meeting different needs. [Hex Shank Design] Our wood drilling hole opener adopts hexagonal shank design, which is compatible with various machine models, such as hand electric drills, lithium electric drills, and bench drills. Note: It is best to use a machine with good fixation performance for drilling operations. [Widely Uses] Our woodworking drilling hole opener is suitable for deep hole operations in wood products. It is widely used for solid wood, MDF, particle board, density board, particle board, etc. It is prohibited to be used on ceramic tiles, concrete, metal and glass. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service.