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R38 Retrac Thread Button Bits for Quarry Drilling. Customizable Design: Acceptable customization for application, carbide number, color, and design. Wide Diameter Range: Available in diameters from 43mm to 152mm for various drilling needs. Multiple Thread Types: Supports R28, R32, T38, T45, T51, and GT60 thread types. High Durability: Made of high-quality alloy steel and tungsten carbide for hard rock formations. Certified Quality: CE, ISO 9001:2000, and ISO 9001:2008 certified. Flexible Customization: Offers minor, sample-based, design-based, and full customization options. Fast Delivery: Lead time of 7-15 days, with peak season time of one month. 1-Year Warranty: Comprehensive one-year warranty with after-sales service support.