Wenheww 5Pcs Twist Drill Bits, 5.8mm (0.23") 4241 High Speed Steel Straight Shank Twist Drill Bit, Premium 4241 HSS Micro Drill Bits for Wood, Metal, Steel, Plastic, Aluminum Alloy

Wenheww Twist Drill Bits Specification Drill Bit Diameter: 5.8mm / 0.23" Shank Diameter: 5.8mm / 0.23" Material: HSS-4241 (High Speed Steel) Hardness (HRC): 62-63 Color: Silver Surface Treatment: Heat Treatment Description 1. Grinding in multiple processes, the cutting edge is sharp, the cutting resistance is small, and the hardness is high. 2. Spiral flute design reduces clogging and smooth chip evacuation 3. Round shank design, easy clamping, tight clamping, no slippage. Precautions for Use 1. Before drilling, mark the position where you need to drill. If it is a material with a relatively smooth surface, it is recommended to cover it with clay and other items to avoid the drill bit from slipping on the surface of the product. 2. When drilling, you need to add water while drilling, or directly put the product into the water to drill, which can effectively reduce the wear and tear of the product in use. 3. Drilling needs to be effected at high speed, smooth and without shaking, lightly press, and can't be squeezed hard. Package Content 5Pcs x Twist Drill Bits

• 1.Parameter：Drill Bit Diameter: 5.8mm / 0.23"; Shank Diameter: 5.8mm / 0.23"; Material: HSS-4241 (High Speed Steel); Hardness (HRC): 62-63; Color: Silver; Surface Treatment: Heat Treatment.
• 2.Material：Twist drill bit is made of 4241 HSS (high speed steel) steel, which has good toughness and hardness, is not easy to break, and is easy to remove chips. Heat Treatment can increase the hardness and corrosion resistant of twist drill bit.
• 3.Features：The spiral groove design can avoid the displacement of the drill bit during the working process, and at the same time, the debris can be removed more quickly and easily. Sharp cutting edges provide smooth cutting without burrs.
• 4.Wide Applications：The twist drill is suitable for electric drills, hand electric drills and impact electric drills. Suitable for drilling stainless steel, iron, copper, aluminum alloy, wood and plastic.
• 5.Package Content：5Pcs x Twist Drill Bits.