High-efficiency power transmission component designed for reliable drive in 3D printers and precision machines. Key features - Bore options: 14 mm, 16 mm, 18 mm, 19 mm, 22 mm, 24 mm, 25 mm, 28 mm for versatile mounting and compatibility with common motor shafts. - Material and build: made from aluminum alloy, precisely machined with a smooth surface for durable use; sturdy and long-lasting. - Surface treatment: oxidation processing provides anti-corrosion and anti-rust protection, improving durability in demanding environments. - Broad compatibility: suitable for 3D printers, CNC machines, stepping motors, and other precision transmission equipment. Why you need it - Improves power transmission efficiency and reliability in belt-driven drive systems. - Multiple bore sizes enable easy integration with different motors and shafts without adapters. - Aluminum alloy construction offers a balance of strength, light weight, and heat dissipation for consistent performance. Practical applications - 3D printer upgrade: replace or upgrade drive pulleys to enhance axis motion accuracy and belt alignment on X, Y, and Z axes. - CNC and routing equipment: use in belt-driven motor assemblies to ensure precise, durable transmission. - Robotics and automation projects: reliable coupling between stepper motors and driven components in compact, precision platforms. Performance highlights - Corrosion-resistant finish and durable aluminum alloy construction for long-term use in typical workshop environments. - Smooth surface finish and precise bore tolerances support accurate belt and shaft engagement.