https://www.dhcutter.net/shop/dh-carbide-inserted-hinge-boring-bits-for-woodworking/
一，Integral Carbide Brad Point Drill Bit
1. Material: steel body + integral carbide head.
2. Specifications:
A. Shank diameter 10mm, regular shank length 20mm.
B. Flute diameter 5~15mm.
C. Regular length 57mm/70mm,
It is divided into positive and negative, and the forward rotation is black, which is represented by R, and the reverse is red, which is represented by L.
Its advantage over ordinary brad point drill bit is that due to the large rake angle, the holes drilled are very smooth, so the service life of the overall alloy is three times that of ordinary row drills. The double-groove deep spiral design makes chip removal smoother and is suitable for all woods hole Punching.
https://www.dhcutter.net/shop/dh-carbide-inserted-hinge-boring-bits-for-woodworking/
二，Integral Carbide Dowel Drill
1. Material: steel body + integral carbide head.
2. Specifications:
A. Shank diameter 10mm, regular shank length 20mm.
B. Flute diameter 5~15mm.
C. Regular length 57mm/70mm,
It is divided into forward and reverse, and the positive rotation is black, which is represented by R, and the reverse is red, which is represented by L.
The whole ultra-fine particle alloy head not only enhances the sharpness, but also triples the service life of ordinary drills. The double-groove deep spiral design makes chip removal smoother. The hole surface finish is better.
三，V-point Drill Bit
1. Material: steel body + integral carbide head.
2. Specifications:
A. Shank diameter 10mm, regular shank length 20mm.
B. Flute diameter 5~15mm.
C. Regular length 57mm/70mm,
It is divided into forward and reverse, and the positive rotation is black, which is represented by R, and the reverse is red, which is represented by L.
The whole ultra-fine particle alloy head not only enhances the sharpness, but also triples the service life of ordinary drills, and the multi-cutting edge design prevents edge bursting.