Features：

Option prolong straight bucket shell can avoids drilling hole inclined;

Choose conical shell type can accelerate dumping, increase of efficiency;

Ventilation pipe shaft inside prevents vacuum; add collar plate according to working conditions;

Remark:

Cutter and Bottom Custom: Single and Double design as Customer demand;

Kelly Box Size: Kelly box size based on the kelly bar, like 130*130, 150*150,200*200 etc;

All measurements are in millimeters, weight in kilograms.

Kelly Bar:

Features：

Option prolong straight bucket shell can avoids drilling hole inclined;

Choose conical shell type can accelerate dumping, increase of efficiency;

Ventilation pipe shaft inside prevents vacuum; add collar plate according to working conditions;