amoolo Cobalt Drill Bit Set (1.5-6.5mm,13Pcs), M35 HSS Metric Twist Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron

• 【M35 Cobalt Drill Bit】This drill bit contains 5% Cobalt (M35 Cobalt HSS), which increases the strength, extend the tool life and makes it more heat-resistant. Rockwell Hardness >= 67.
• 【Combo Set of 13 Sizes】13 most commonly-used sizes: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm. It is packed with a plastic case for easy storage and organization.
• 【Multiple Application】✔️ M35 Coblat HSS is perfectly suitable for Hard Metals, such as Stainless Steel and Cast Iron. Can be used for Wood, Aluminum Alloy and Other Softer Metals. ❌NOT for Glass or Ceramic Materials. ⚠️ Pay attention to speed, pressure and heat control during drilling.
• 【Fully Ground Process & 135° Split Point】No center punch is needed. Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135° split point with straight shank prevents walking and makes drilling precise and faster.
• 【HASSLE-FREE WARRANTY】If you are not fully satisfied for any reason, please contact us for 100% refund or replacement in 90 days.

Amoolo M35 Cobalt Twist Drill Bit Set 13 Pcs 【Specifications】 −Material: High-Speed Steel M35 Cobalt (5% Cobalt) −Split Point: 135° −Process: Fully Ground −Flute Type: Spiral −Shank Type: Straight Round Shank −Applications: Perfectly suitable for Hard Metals, such as Stainless Steel and Cast Iron 【What does the set include?】 13 most commonly-used sizes - 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm. Come with a plastic case for easy storage and organization. 【What is M35 Cobalt?】 ►The addition of 5% cobalt increases drill bit’s heat and wear resistance, which makes it perfectly suitable for Stainless Steel and Cast Iron. M35 Cobalt steel drill bits can penetrate a 5mm-thick 304 stainless steel plate in 5 seconds. ►While the 5% cobalt makes the bits much more durable,it also makes them more brittle than ordinary HSS bits under improper usage. 【How to use this Drill Bit? Here are some warm tips】 ►Keep the bit vertical and fixation while drilling. ►To avoid drill bit break, 1/16” or smaller bits are suggested used with pin vise. ►Pay attention to the cooling of the bit, adding water or coolant when drilling can increase the life of the bit. 【Warranty: 90 Days】 No worries! Your satisfaction is our ultimate goal. If you have any questions or concerns about our products, please do not hesitate to contact our customer service team support@amoolo.com, we will respond within 12 hours. 【Why choose Amoolo?】 Amoolo - Craft the future! Amoolo is ONE STOP SHOP for ALL TOOL ACCESSORIES. We have years of OEM experience for international well-known brands. We are committed to providing the best quality products at an affordable price. Amoolo is always by your side to craft your desk, living room, home even the future!