Drilling for attaching stainless steel cut-off letters
On 2017-02-09 09:47:25
It is used for drilling porcelain tiles and stone. Sharpness is outstanding. However, because it is drilling about 100 holes at a time, it takes time and effort to use it while perspiring to perspiration so as to give it a sharpness. I'm happy that durability will increase, but I like it because I can drill precisely and cleanly.