QL50A Down the hole hammer bits, also called QL50A DTH Hammer drill bits, QL50A DTH Bits; 5 inch hammer bit;

STAROCKDRILL Manufacturing higher quality DTH Bits with QL50/QL50A shank, which can be designed with customers’ requirements. 

This shank have foot value and without foot value.

All our DTH drill bits are CAD designed, CNC manufactured for perfect bits body, and multiple heat-treated to enhance hardness, 

surface-compressed for fatigue resistance, all thus to extend the product life for maximum wear and performance in the toughest of drilling conditions. 

Moreover, all these bits are also made from high quality alloy steels and fitted with premium quality tungsten carbide tips for superior penetration rate.

STAROCKDRILL also having other sizes of the hammers and bits, as belowing:

Advantages:

1.More stable drilling at work.

2.Avoid some problems which the air compressor is not stable

3.The drilling holes are straightly

4.Easy operation and replaced other brand

How to order:

DTH BITS: BIT SHANK + DIAMETER (NEED FOOT VALUE OR NOT) 

(We are customizing customer on bit face and button shape)