Reduced Shank Twist Drill Bits, 1/2 in, 4341 HSS 118° Point, Nitriding Black, Wood Plastic Copper Aluminum Iron

Feature:【4341 High Speed Steel】The 14mm/0.55in drill is made of 4341 high speed steel, which has excellent hardness characteristics and wear resistance, and can still maintain stable performance under high temperature operation environment, and its surface is coated with titanium nitride, which significantly improves the surface finish, and effectively inhibits the phenomenon of chip adhesion.【3-Flat Shank】The HSS drill adopts an innovative 3-face flat design, which realizes precise torque transmission and effectively reduces radial vibration amplitude by matching with the precision keyway of the machine spindle and ensures that the hole positioning accuracy reaches the micron level during the machining process, and perfectly guarantees the accuracy of the hole size and surface finish.【Precise Cutting】 The twist drill adopts 118° golden section inclined edge design, with unique geometric cutting principle, it can realize instant cutting into the material surface and efficient chip removal, and the drilling process is smooth and steady. Cutting diameter of 14mm/0.55in, the standard cutting diameter accurately adapt to most application scenarios, whether it is accurate hole making for metal plates, stable anchoring of wooden structures, or DIY handmade creativity, professional carpentry and daily household maintenance, can become the preferred tool for cross-cutting operations by virtue of the excellent cutting performance and universal adaptability.【Efficient Chip Discharge】Shrinking shank drills are designed with a bifurcated tip to form a double helical groove, which increases the space for chip discharge, and with the sharp edge made of high speed steel, it realizes fast chip breakage and discharge, avoiding chip blockage that leads to drill bit jamming.【Widely Used】1/2" shank diameter is compatible with electric drills, bench drills and household impact drills, no need for special collets, lowering the threshold for home users. Suitable for soft metal and woodworking projects, widely used in home maintenance and other daily operations, suitable for processing medium hardness materials, such as, copper, aluminum, iron, plastic and wood.Note: When using this shrink shank drill, you need to keep the drill bit 90° perpendicular to the surface of the workpiece to ensure machining accuracy; It is recommended to use with water-based coolant to effectively control the operating temperature; For deep hole machining, it is recommended to use the pre-drilling and positioning process, drilling and making the pilot hole first and then reaming the hole step by step in order to get the best machining effect.Specification:Name: 14mm/0.55in Drill BitMaterial: 4341 HSSShank Type: 3-FlatShank Diameter: 1/2"Working Length: 70mm/2.76inLength: 150mm/5.91inCutting Diamater: 14mm/0.55inCutting Angle: 118°Colour: Black-silver

• [Drill Holes Faster] 14 mm drill bit with 1/2" reduced shank fits 10 mm hand drill models & drill presses; 118° standard point bites copper, aluminum, plastic & wood without pilot, doubling woodworking metal productivity
• [Keeps Edge Sharp at 1 200 rpm] Titanium nitriding black coat lowers friction so chips slide away, stopping heat-blue and extending bit life 3× versus uncoated steel
• [3-flat shank anti-slip twist locks into keyed or keyless chucks] 150 mm total length reaches 70 mm deep for through-holes in 2×4, medium soft metal plate or acrylic sheet with zero radial wobble
• [Smooth Chip Evacuation] Double helix flute clears dust quickly, preventing jamming and burn marks; perfect for unisex adult DIY shelving, ball-hitches, lock-sets or 59/64 final ream tasks
• [Single-bit Value] Sharpen with standard grinding wheel, wipe oil for rust protection; compatible with drill press, cordless or corded drivers for electrical, HVAC, craft or hobby jobs right out of the box