JBWTL/Jingbawang black and yellow straight shank twist drill bit set drill

Implementation of the national standard (GB/T6135.3)

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