HARFINGTON 10pcs Jobber Drill Bits 1mm (5/128") Nitride Coated High Speed Steel Twist Drill Bits for Metal Wood Plastic

HARFINGTON 10pcs Jobber Drill Bits 1mm (5/128") Nitride Coated High Speed Steel (HSS) 4241 Twist Drill Bits for Stainless Steel Copper Aluminum Alloy Metal Wood Plastic, Black

HARFINGTON 10pcs Jobber Drill Bits 1mm (5/128") Nitride Coated High Speed Steel Twist Drill Bits for Metal Wood Plastic

Jobber drill bits can drill clean and accurate holes in stainless steel, cast iron, carbon steel, aluminum alloy, copper, and brass, wood and plastic. NOT suitable for tiles, concrete, walls, stones. Large spiral grooves facilitate the export of metal chips, saving time an effort. Use an appropriate lubricant (such as cutting fluid or oil) to reduce friction and heat build-up. Make sure the drill bit is tightened securely, and keep the drill bit perpendicular to the work surface. The 135 degree fast cutting point penetrates quickly with less pressure and prevents walking on metal surfaces. Improve hardness, increase wear resistance and prolong its life. Nitride coating also reduces friction in the drilling process, resulting in smoother and faster drilling performance. The twist drill bit can be used with handheld drills, drilling machines, bench drills, machining centers, CNC lathes. The larger the diameter, the slower the speed required. Start the drill at a slow speed and gradually increase to the desired drilling speed. If the hole is larger than 6mm, first drill a small hole with a 3.2mm-4mm drill bit, and then use a larger drill bit to enlarge the hole.

Key Features

• ✅ Size - Cutting edge diameter: 1mm / 5/128"; round shank diameter: 1mm / 5/128"; cutting edge length: 13.5mm / 0.53"; overall length: 34mm / 1.34"; split point: 135 degree (Fast cutting point penetrates quickly with less pressure and prevents walking on metal surfaces.)
• ✅ Material - 4241 high-speed steel provides excellent hardness, high strength, wear resistance and good heat resistance. This helps ensure efficient, consistent drilling performance, and prevent overheating and extending the life of the drill bit.
• ✅ Features - Black nitride coating can improve hardness, increase wear resistance and prolong its life. The nitride coating also reduces friction in the drilling process, resulting in smoother and faster drilling performance.
• ✅ Applications - Drill clean and accurate holes in stainless steel, cast iron, carbon steel, aluminum alloy, copper, and brass, wood and plastic. Large spiral grooves facilitate the export of metal chips, saving time an effort. NOT suitable for tiles, concrete, walls, stones.
• ✅ Note - Used with handheld drills, drilling machines, bench drills, machining centers, CNC lathes. Use an appropriate lubricant to reduce friction and heat build-up. Make sure the drill bit is tightened securely, and keep the drill bit perpendicular to the work surface.

Shipping & Guarantees

• ✅ FREE standard shipping within the United States (3–6 business days)
• ✅ 100% money-back guarantee for lost or damaged items
• ✅ Secure checkout with encrypted payment processing
• ✅ Shipping via UPS, FedEx, and USPS
• ✅ Ships to lower 48 states only (no PO Boxes / APO / FPO)

Returns

• ✅ 30-day hassle-free returns
• ✅ Items must be unused and in original packaging
• ✅ Full refund if item is not delivered
• ✅ Guaranteed delivery within 6–7 business days

Payment Methods

✅ Credit Cards, PayPal, Shop Pay, Apple Pay, Google Pay, Amazon Pay, Meta Pay

Customer Support

✅ Questions? Contact us at Support@GiftAbay.com
We respond within 24 hours on business days.