Product Name: JBWTL/Jingbawang cobalt-containing set drill bit

Material: M35 high speed steel containing cobalt

The outer packaging is exquisite and adopts a hardened and thickened iron box, which is not easy to damage; the inner packaging is a high-speed steel drill bit containing cobalt, which has strong general performance. Industrial-grade quality is suitable for processing stainless steel, die steel, ordinary steel, aluminum, copper, wood and other materials for drilling. Sharp, safe and durable quality assurance.

The specifications of the 13-piece set of 1.5-6.5mm are: 1.5 2.0 2.5 3.0 3.2 3.5 4.0 4.5 4.8 5.0 5.5 6.0 6.5mm

The specifications of the 1-10mm 19-piece set are: 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10mm

The specifications of the 1-13mm 25-piece set are: 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10 10.5 11 11.5 12 12.5 13mm