Tool Kits By HARFINGTON

• Size - Drill Diameter: 8.5mm / 0.33-inch, Drill Bit Length: 64mm / 2.52-inch, Shank Size: 1/4 Inch(6mm) Hex, Total Length: 115mm / 4.53-inch
• Material - The hex drill bit is made of M35 cobalt high speed steel with sharp edge. The surface is coated with titanium, which has higher hardness, better wear resistance and longer service life than ordinary drills.
• Feature - 1/4 \" hex shank, which can quickly replace the drill bit. The fully ground spiral groove design can quickly remove debris, reduce friction and heat, and drill faster. The 135 degree straight shank split point reduces walking on the working face, making drilling accurate and easy.
• Application - Hex twist drill bits are used for applications such as DIY projects, and home maintenance. Suitable for steel, copper, aluminum, zinc alloy, cast iron, wood and plastic.
• Note - Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.

• Size - Drill Diameter: 11.5mm / 0.45-inch, Drill Bit Length: 77mm / 3.03-inch, Shank Size: 1/4 Inch(6mm) Hex, Total Length: 140mm / 5.51-inch
• Material - The hex drill bit is made of M35 cobalt high speed steel with sharp edge. The surface is coated with titanium, which has higher hardness, better wear resistance and longer service life than ordinary drills.
• Feature - 1/4 \" hex shank, which can quickly replace the drill bit. The fully ground spiral groove design can quickly remove debris, reduce friction and heat, and drill faster. The 135 degree straight shank split point reduces walking on the working face, making drilling accurate and easy.
• Application - Hex twist drill bits are used for applications such as DIY projects, and home maintenance. Suitable for steel, copper, aluminum, zinc alloy, cast iron, wood and plastic.
• Note - Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.

• Size - Cutting edge diameter: 4.9mm / 0.193\"; cutting edge length: 40mm / 1.57\"; shank diameter: 4.9mm / 0.193\"; overall length: 86mm / 3.39\"; cutting point angle: 135 degree; manufacturing technology: fully-ground
• Material - M42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness. Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant.
• Features - Sharp cutting edge provides fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, saving time and effort in operation. Chamfered shank design for easier clamping and less slippage during use.
• Applications - The straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Do not drill quenched and tempered materials.
• Notes - Choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. Please pay attention to the speed adjustment when using the electric drill. The larger the drilling size, the slower the speed requirement.

• Size - Cutting edge diameter: 9.2mm / 0.362\"; cutting edge length: 65mm / 2.56\"; shank diameter: 9.2mm / 0.362\"; overall length: 125mm / 4.92\"; cutting point angle: 135 degree; manufacturing technology: fully-ground
• Material - M42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness. Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant.
• Features - Sharp cutting edge provides fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, saving time and effort in operation. Chamfered shank design for easier clamping and less slippage during use.
• Applications - The straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Do not drill quenched and tempered materials.
• Notes - Choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. Please pay attention to the speed adjustment when using the electric drill. The larger the drilling size, the slower the speed requirement.

• Size - Cutting edge diameter: 2.3mm / 0.091\"; cutting edge length: 23mm / 0.91\"; shank diameter: 2.3mm / 0.091\"; overall length: 53mm / 2.09\"; cutting point angle: 135 degree; manufacturing technology: fully-ground
• Material - M42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness. Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant.
• Features - Sharp cutting edge provides fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, saving time and effort in operation. Chamfered shank design for easier clamping and less slippage during use.
• Applications - The straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Do not drill quenched and tempered materials.
• Notes - Choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. Please pay attention to the speed adjustment when using the electric drill. The larger the drilling size, the slower the speed requirement.

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