Features: brand new and high quality Wide-range Application: All new RC central gear box transmission with 540 brushed motor 55T could for most toy RC for cars of 1/10 scale as SCX10 SCX10 II 90046, use as the replacement part of your RC toy accessories. Spare Part of RC Toy: A perfect replacement for your handmade RC toys, especially for toy RC crawler for cars, replacement of your electrical toys which offer a for fresh new service cycle with great performance. Speciality Design: The heavy duty device designed and carry with 3D slim cutting, improving outline of product and grade, accuracy cutting holes to ensure better heat release, more durable & stability for better performance and for play experience. High Quality Material: Made by exquisite workmanship with aluminum alloy material, with good resistance of abrasion and erosion, more stable with good performance for RC toy parts. Easy Installation: Applicable for most RC car toys requirements and easy to install and change by your own, if you need any further instructions please do not hesitate to contact with us. Specifications: Material: Metal Product Dimension: approx. 5.3 x 3.6cm/2.09 x 1.42 inch Proportion: 1/10 Net Weight: approx. 383g/0.84 lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x RC Gear Box with 540 Motor