Audited Supplier
PREMIUM QUALITY - These drill bits are made of high speed steel and the surface is plated with titanium for high hardness, high wear resistance and long service life.
135 DEGREE SPLIT POINT - The 135 degree split point tip and twist design helps with cutting speed while providing easy self centering without walking.
HEX SHANK - The drill bit is designed with 1/4" hex shank and provides easy quick change outs. It perfect for electric screwdrivers, drills or use in standard drill chuck.
WIDELY USE - It suitable for drilling iron, wood, plywood, plastic, aluminum alloy, copper. Not applicable to marble, granite, full ceramic tiles, vitrified tiles and floor tiles.
| DESCRIPTION OF HSS | C | W | Mo | Cr | V | Co | Si | Mn | P | S |
| % | % | % | % | % | % | % | % | % | % | |
| W2MoCr4V(F4341) | 0.95-1.05 | 1.7-2.4 | 0.8-1.2 | 3.8-4.4 | 0.8-1.2 | 1.0-1.4 | 0.2-0.4 | <=0.03 | <=0.03 | |
| W4Mo3Cr4V(4341) | 0.88-0.98 | 3.5-4.5 | 2.5-3.5 | 3.8-4.4 | 1.2-1.8 | 0.5-1.2 | 0.2-0.4 | <=0.03 | <=0.03 | |
| W9Mo3Cr4V(9341) | 0.77-0.87 | 8.5-9.5 | 2.7-3.3 | 3.8-4.4 | 1.3-1.7 | - | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W6Mo5Cr4V2(M2) | 0.8-0.9 | 5.5-6.75 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | - | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W6Mo5Cr4V2Co5(M35) | 0.9-0.95 | 5.5-6.5 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | 4.5-5.5 | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W2Mo9Cr4V2Co8(M42) | 1.05-1.15 | 1.15-1.85 | 9.0-10.0 | 3.5-4.25 | 0.95-1.25 | 7.75-8.75 | 0.15-0.65 | 0.15-0.4 | <=0.02 | <=0.025 |
| SIZE | TOTAL LENGTH | FLUTE LENGTH |
| 1.5 | 63 | 17 |
| 2 | 67 | 24 |
| 2.5 | 75 | 29 |
| 3 | 81 | 33 |
| 3.5 | 90 | 38 |
| 4 | 94 | 43 |
| 4.5 | 100 | 47 |
| 5 | 106 | 49 |
| 5.5 | 113 | 56 |
| 6 | 113 | 58 |
| 6.5 | 119 | 63 |
| 7 | 108 | 68 |
| 7.5 | 108 | 68 |
| 8 | 115 | 75 |
| 8.5 | 117 | 74 |
| 9 | 124 | 80 |
| 10 | 133 | 88 |
| 11 | 141 | 92 |
| 12 | 150 | 103 |
| 13 | 150 | 103 |
we can also supply different kinds surfact treatment for customer.
Q1: Do you have your own brand?
A1: Yes, the brand name is STARRY Tools, we can provide OEM services to our customers as well.
Q2: What's your target market?
A2: We mainly focus on Europe and South America right now.
Q3: What is the biggest advantage compared to the rivals?
A3: We are one of the strongest HSS Cutting tools supplier in China.
Q4: What is your MOQ?
A4: 500 pcs
Q5: What about the payment and delivery time?
A5: Delivery time: All items are ready in stock and can be sent within one week.
Payment: T/T.
100% protection for product quality, on-time shipment and payment
Q6: Can I get some samples?
A6: Yes, we are honored to offer you samples for quality check at your freight cost.
Q7: How does your factory do regarding quality control?
A7: Quality is priority. We always attach great importance to quality control from the very beginning to the end of the production. Every product will be carefully tested before it's packed for shipment.
