
Yn27c Mine Tunnel Hand Held Portable Internal Combustion Gasoline Rock Drill. 1-Year Warranty Coverage: Includes comprehensive after-sales service for 1 year from the date of purchase. CE and ISO 9001 Certified: Meets international safety and quality standards with CE and ISO 9001:2000 certifications. Full Customization Available: Offers full customization, minor customization, and flexible customization options based on designs or samples. Compact and Portable Design: Hand-held portable internal combustion gasoline rock drill weighing 27kg for easy transport. Efficient Compound Drilling: Utilizes compound drilling way with diamond bits for high perforation rates up to 250r/Min. Air-Cooled Two-Stroke Engine: Features a single-cylinder petrol engine with air cooling and no contact ignition for reliability. Integrated Air Compressor: Synchronous piston movement creates an efficient compression chamber for drilling operations. 100% Finished Product Inspection: Every unit undergoes visual and function inspection by 6 dedicated QA/QC inspectors.