Complaint
16PCS Combination Drill Bit Set
1. Twist drills are made of 4241 high-speed steel, construction drills are made of 45# carbon steel, and carpentry drills are made of 45# carbon steel.
2. The process of these three drill bits:
1) Rolled and edge-cleaned roasted jute twist drill: according to DIN338 standard, the material is 4241#HSS, rolled, the whole drill bit is heat-treated in a salt bath furnace, and the hardness reaches HRC60; the opening angle of the head is 118°, and the opening angle of the head is more than 4mm. The diameter error of the drill bit is within 3 wires; the surface of the drill bit is roasted yellow.
2) Powerful milling sandblasting construction drill: according to the national standard, the material is 45# carbon steel, heat treatment; milling by automatic milling machine, surface sandblasting; the cutter head is YG8C forming cutter head;
3) Ordinary margin woodworking drill: according to the national standard, the material is 45# carbon steel, rolled (margin);
3. The specifications of these three drills:
1)Twist drill bits:2/3/4/5/6/8mm;
2)Masonry drill bits:4/5/6/8/10mm;
3)Wood Working drill bits:4/5/6/8/10mm;
4. APPLICATION--Can be used to drill holes in metals, plastics, and woods.
5. PACKING--Plastic box packaging, easy to store and carry, but also anti-rust.
| Brand | CROWNMAN |
| Name | 16PCS Combination Drill Bit Set |
| Size | Twist drill: 2-8mm, Masonry Drill: 4-10mm, Wood drill: 4-10mm |
| Material | 4241 HSS/Carbon steel |
| Application | Use to drill holes in metals, plastics, and woods |
| Color | Amber Color |
| Packing | Plastic Box |
WHY CHOOSE CROWNMAN?
Competitive Price - The mature supply chain system and large warehouse ensure that our products are highly competitive in cost and price.
Superior Quality - Quality supervision of the whole process of production from raw materials, manufacturing, packaging, and warehousing to container loading.
On-Time Delivery - The mature logistics management system and geographical advantage ensure that our OTD rate reaches 100%.
