4 teeth 40 bit 7° cone B22 conical hole connection bit head rotary bit pillar tooth alloy bit
Contact: Mr Chen
Phone: +86 18574606855
Tel: +86 746 8323309
Email: pearldrill02@guangzhouintl.com
Add: Shanhuxi Road, Chuangfacheng Plaza, Yongzhou City ,Hunan Province China