Feature: 1. Simulation Design and Superb Workmanship: Highly detailed simulation design and superb workmanship, very suitable for your remote control hub. Rubber sealed bearing kit fit for Super Blackfoot, and for Stadium Blitzer. 2. Manufacturing Material: Made of high quality stainless steel material, strong, durable, and long service life. 3. Good Performance: Good performance, light weight, small friction, fast speed, which will undoubtedly improve the performance of the remote control car. 4. Contactless Double Rubber Seals: Special contactless double rubber seals can seal dirt while providing frictionless performance. 5. Diverse Features: High accuracy, good compatibility, easy installation. Available in two sizes to meet your needs. Specification: Item Type: Rubber Sealed Bearing Kit Weight: Approx.19g / 0.7in Material: Stainless Steel Color: Blue Product Size: Approx.5 x 11 x 4mm / 0.2 x 0.4 x 0.2in (12pcs) Applicability: For Super Blackfoot, And For Stadium Blitzer RC Car. Package List: 12 x Rubber Sealed Bearing Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the object.