TopHomer 1 Pcs 3/8" HSS Reduced Triangular Shank Black Twist Drill Bit, 135 Degree Split Point, 29/64" Cutting Diameter Metal Drill Bit for Aluminum Copper, Wood and Plastic

Feature: 【Hard and Sturdy】The reduced shank twist drill bit is made of HSS high-performance steel forging, through the 61-63HRC Rockwell hardness tempering process, balancing the hardness of the edge and the toughness of the shank, in the continuous cutting of heat-conducting metals (such as copper and aluminium) can delay the softening of the edge to extend the cycle of continuous operation 【Anti-Rust and Corrosion Resistance】The black nitride treatment on the surface of this high-speed steel drilling bit improves wear resistance and also forms a dense oxidised layer, which slows down the risk of rust and corrosion in humid environments, especially suitable for users in the rainy season or coastal areas 【135° Open Angle Design】This 3-flats reduced shank twist drill's 135° drill tip angle design further optimises the cutting force distribution, making it more suitable for handling harder materials such as copper and aluminium plates than traditional drills 【Solid Clamping】This reduced shank twist drill bit's 3/8" triangular shank design is compatible with mainstream power tool interfaces, and enhances clamping stability through three-plane contact, thus avoiding slippage and deflection during high-rotation operations, which is very suitable for aluminium alloy window and door assembly, circuit board drilling and other light machining scenarios that require high precision Specification: Material: High Speed Steel(HSS) Surface Treatment: Nitrided Black Length: 150mm/5.91in Working Length: 75mm/2.95in Cutting Diameter: 29/64'' Shank Diameter: 3/8" Cutting Angle: 135° Note: Please allow for manual measurement errors. Package Included: 1 * High Speed Steel Black Drill Bit with 3/8" Shank

• 【Hard and Sturdy】The reduced shank twist drill bit is made of HSS high-performance steel forging, through the 61-63HRC Rockwell hardness tempering process, balancing the hardness of the edge and the toughness of the shank
• 【Anti-Rust and Corrosion Resistance】The black nitride treatment on the surface of this high-speed steel drilling bit improves wear resistance and also forms a dense oxidised layer, which slows down the risk of rust and corrosion in humid environments
• 【135° Open Angle Design】This 3-flats reduced shank twist drill's 135° drill tip angle design further optimises the cutting force distribution, making it more suitable for handling harder materials such as copper and aluminium plates than traditional drills
• 【Solid Clamping】This reduced shank twist drill bit's 3/8" triangular shank design is compatible with mainstream power tool interfaces, and enhances clamping stability through three-plane contact, thus avoiding slippage and deflection during high-rotation operations, which is very suitable for aluminium alloy window and door assembly, circuit board drilling
• 【Easy to Use】The installation of this HSS drilling bit is also very simple, you only need to insert the shank of the drill bit into the taper hole of the drill chuck or spindle, gently rotate to confirm the correct direction, and then use a spanner or special tool to lock it, which is very convenient