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1、SERIES OF DOWN THE HOLE BITS（BUTTON TYPE）
Features: rock drilling for opencast mining and quarrying field.
Bit Size Bit Type
4-1/8 Q82-H-105
4-5/16 Q32-H-110
4-1/8 Q32-H-115
4-1/2 Q72-H-105G
5-7/8 Q72-H-150G
6-1/2 Q82-H-165G
8-1/4 Q32-H-210
Bit Size Bit Type
3-3/4 BLADE TYPE QC3-J BUTTON TYPE Q-H
4-5/16 BLADE TYPE QC3-J BUTTON TYPE Q-H
4-17/32 BLADE TYPE QC3-J BUTTON TYPE Q-H
4-3/4 BLADE TYPE QC3-J BUTTON TYPE Q-H
6-3/32 BLADE TYPE QC4-J BUTTON TYPE Q-H
8-1/4 BUTTON TYPE Q-H
2、DOWN THE HOLE BITS（BUTTON TYPE）（BLADE TYPE）
Features: rock drilling for various metal mining.
Bit Size Bit Type
3-17/32 QC3-J-90
4-5/16 QC4-H-110
4-17/32 Q32-J-115
5-7/8 QC4-J-150
3、DRILL BIT FOR CUTTING IRON HOLE
Features: applicable for drilling iron hole during the course of steel refining in the large steel works.
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