Uniform Speed Gear Specification:
Material: aluminum alloy (shell), stainless steel (gear)
Motor Teeth: 9T-32P
Gear Ratio: 9:1
Compatible Motor: 540, 550/outer rotor (3.17mm shaft)
Output Shaft: 5mm
Compatible Base Plate: SCX10 model (three hole)
Weight: 54.2g (excluding screws)

High Speed Gear and Slow Speed Gear Specification:
Material: titanium alloy (gear) , stainless steel (shaft/Bolt)
Motor Teeth: 8T-32P
Gear Ratio: 1: 5.9 (fast); 1: 10.5 (slow)
Compatible Motor: 540, 550/outer rotor (3.17mm shaft)
Output Shaft: 5mm
Weight: 54.2g (excluding screws)
Gear weight: 1:5.9(20.3 g) ; 1:10.5 g (32P)

What's Included:
1 * LCG Gearbox
1 * Gear