Precision-Crafted Miniature Router Bits & Ball Bearings for High-Speed Applications

Ultra-Durable 693ZZ & R-830ZZ Ball Bearings – Made from hardened chrome steel with tight tolerance (ABEC-1 standard) for smooth rotation under extreme RPM. Ideal for dental grinding machines, CNC routers, and industrial nailing equipment.

3x8x4mm Compact Design – Engineered for precision micro-machining in confined spaces. Features a polished surface finish to minimize friction and extend tool life.

Dual-Purpose Utility – Perfect for woodworking detail carving and metal/acrylic engraving. The ball-bearing guide ensures stable cutting depth for flawless edges.

Industrial-Grade Materials – Tungsten carbide cutting edges with anti-kickback design. Withstands temperatures up to 600°C without losing sharpness.

Global Bulk Supply Advantage – Factory-direct pricing for wholesale buyers. Compatible with Dremel, Proxxon, and most rotary tools. Stocked in ISO-certified warehouses for fast shipping.