Features: Wide-range Application: All new RC Differential assembly/front rear shock absorber/wheel tire & hub could for UD1601 UD1602 UD1603 UD1604 UD1607 SG1603 SG1604 RC stunt drift car, use as the replacement part of your RC toy accessories. RC Toy Spare Part: 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. Exquisite Technology RC Part: The anti-rusty material carry with 3D slim cutting, improving outline of product and grade, accuracy cutting holes to ensure easy assembled, more durable & stability for better performance and for play experience. High Quality Material: Made by exquisite workmanship with plastic/metal material, with good resistant 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. Package Includes: Type A: 1 x Differential Assembly Type B: 1 x Front & Rear Hydraulic Shock Absorber Type C: 4 x Wheel Tire with White Hub Type D: 4 x Wheel Tire with Black Hub Specifications: Material: Plastic, Metal Product Dimension: approx. A 2.6cm/1.02 inch, B front shock 5.5 x 1.3cm/2.17 x 0.51 inch rear shock 6 x 1.3cm/2.36 x 0.51 inch, C/D Outer diameter 4.7cm/1.85 inch, inner diameter 3.6cm/1.41 inch, width 2.2cm/0.87 inch Type Options: A(Differential assembly)/B(Front & Rear hydraulic shock absorber)/C(4pcs Wheel tire with white hub)/D(4pcs Wheel tire with black hub) 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.