Package includes 4 x roller wheels Features -Material: Metal -Color: Black Outer diameter: 25mm -Size: 2.50X2.50X1.20cm/0.98X0.98X0.47in Height: 12mm Inner diameter: 5mm Product Description Metal passive round rollers designed for 3D printed pulleys combine durable construction with precision bearings to support consistent, low-friction movement. Their compact size and robust metal construction withstand long-term use, helping 3D printers maintain smooth operation. From hobby workshops to professional additive manufacturing facilities, these metal wheels reduce noise and mechanical wear, improving printing accuracy and speed. Thoughtfully engineered with fine workmanship, they offer practical replacement options for linear bearing pulleys, easily fitting into various 3D printer assemblies. Beyond functionality, these roller wheels provide increased confidence for users focused on precise and reliable 3D printing experiences. Compact and easy to install, they seamlessly integrate into existing printer systems, promoting efficient maintenance and performance. Driven by a commitment to practical design, these pulleys serve as essential components for those dedicated to advancing their 3D printing projects with reliable parts. was founded to support manufacturers and professionals with reliable 3D printer parts that uphold precision and durability. With an emphasis on craftsmanship and practical design, our products enhance everyday additive manufacturing tasks. inspires smoother printing journeys and creative breakthroughs, helping users realize ideas with confidence.