
140mm Button Bits DHD350 Hammer for Water Well Rock Blasting Drilling. Wide Diameter Range: Available in 21 sizes from 90mm to 330mm for diverse drilling needs. Universal Compatibility: Interchangeable with Atlas Copco COP series and Ingersoll-Rand DHD series hammers. Premium Material Quality: Constructed from high-grade steel with high-grade tungsten carbide inserts. Custom Color Options: Colors available in Golden, Red, Blue, and other custom requests. Rapid Response Support: Sales team responds to inquiries within 24 hours excluding holidays. Quality Guarantee: Free replacement provided for failures confirmed to be caused by product quality. Advanced Manufacturing: Processed using state-of-the-art CNC machinery and mature heat treatment technology. Certified Standards: Products certified under ISO9001:2015 and SGS standards.