1. Made of cast iron material, with a precision silicon fusion adhesive process for casting the drill frame and hand crank head; 2. Thickened high-strength ABS engineering plastic handle, hollow structure allowing storage of spare drill chucks; 3. Precision cast gears using powder metallurgy technology, high accuracy, hardened through quenching, and wear-resistant; 4. Dual gear drive mechanism, enables flexible operation by hand crank without frequent jamming; 5. Uses a key drill chuck compatible with standard hand drills, offering high clamping precision and reducing the risk of breakage due to eccentricity of the drill bit.
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China, Yiwu China Commodity Market (Yiwu wholesale market), the
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