The a959 motor and motor holder gears set compatible with 1/18 Wltoys A959 A969 A979 K929 RC car The a959 motor holder made of metal material,and the a969 pinion gears made of steel material,durable in use. The 3650 motor is easy and convenient to install and remove. Perfect replacement for old parts, improve the performance of the RC car. Motor Holder Material:Metal Color: Blue Size: 35mm x 38mm x39mm Motor Size: 3650 Motor Dia.: 36mm; Height: 50mm ; Shaft Diameter: 3.175mm ; Shaft Length:11mm; Pinion Gears Material:Steel Motor Gear Teeth:27T Total Weight : 202g/Set Package includes: 1 x Brushed Electric Engine Motor 1 x Motor Mount 1 x 27T Pinion Gear