5 Gear Sizes: Diameter: 11mm/0.4in (20T), 12mm/0.5in (22T), 13mm/0.5in (24T), 14mm/0.6in (26T), 15mm/0.6in (28T). Strong and Durable: High quality steel material gives the gear assembly excellent performance. Perfect Accessories: Not easy to deform or damage, perfect match as a replacement for the original. Motor Gear: Exquisite craftsmanship, specially designed for remote control car, can meet the needs of remote control car enthusiasts. Strong Compatibility: Good spare parts for remote control car, fit for Monster 1/10 RC truck, climbing car. Specification: Item Type: 48DP Motor Gear Material: Steel Colour: Black Weight: Approx.33g/1.2oz Gear Height: Approx. 8mm/0.3in Aperture: Approx. 5mm/0.2in Including T Number: 20T, 22T, 24T, 26T, 28T (one for Each) Diameter: 11mm/0.4in (20T), 12mm/0.5in (22T), 13mm/0.5in (24T), 14mm/0.6in (26T), 15mm/0.6in (28T) Application: for Monster 1/10 RC Truck, Climbing Car Package List: 5 x Gear 5 x Machine Meter Screw