
Top Hammer Drill Parts Coupling Sleeve. Multi-Size Shank Options: Available in HEX shank sizes 22x108MM, 25x108MM, 25x159MM, 28x159MM. Thread Compatibility: Connects with R22, R23, R25, R28, R32 threads for small hole drilling. Dual Hardening Process: Carburization hardens entire rod; High Frequency Induction hardens thread ends. Global After-Sales Service: After-sale service available all over the world with CE and ISO certifications. OEM/ODM Customization: Supports full customization, minor customization, and customization from samples. Premium Material Quality: Made from Alloy Steel with high-grade tungsten carbide inserts for durability. Proven Manufacturing Expertise: Over 20 years specializing in drilling tools with advanced CNC machinery. Flexible Payment Terms: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments.