Name: High-speed steel 90 degree 3-blade chamfering drill bit

Material: high speed steel 4241 high speed steel 6542 high speed steel containing cobalt M35
Specification: 6pcs package includes:
6.3mm (blade diameter) x5mm (handle diameter) x37 (handle length)
8.3mm (blade diameter) x6mm (handle diameter) x40 (handle length)
10.4mm (blade diameter) x6mm (handle diameter) x39 (handle length)
12.4mm (blade diameter) x10mm (handle diameter) x46 (handle length)
16.4mm (blade diameter) x10mm (handle diameter) x47 (handle length)
20.5mm (blade diameter) x10mm (handle diameter) x47 (handle length)
Specifications: 6.3mm, it is recommended to process a diameter of 2-4mm
Specifications: 8.3mm, it is recommended to process the aperture 2-4.5mm
Specifications: 10.4mm, it is recommended to process a diameter of 3-7mm
Specifications: 12.4mm, the recommended hole diameter is 3-8.5mm
Specifications: 16.5mm, it is recommended to process a diameter of 4-11mm
Specifications: 20.5mm, it is recommended to process a diameter of 5-14mm
High-speed steel 4241 material is suitable for softer workpieces with a hardness of 20 one or less: such as aluminum, plastic, wood, etc.
High-speed steel 6542 material is suitable for softer workpieces with a hardness of 25-1 or less: such as: copper, iron, aluminum, etc.
The high-speed steel cobalt-containing M35 material is suitable for hard workpieces with a hardness of 35 one or less: such as: steel, stainless steel, copper, iron, aluminum alloy and other metal products.