A all metal single shaft 1:90 (single shaft full metal shaft 4 metal gears)
B semi metal single shaft 1:90 (single metal shaft, 2 metal gears, +2 plastic gears)
Deceleration ratio 1:90
Input: 3V-6V
Output: 110RPM
Package Included:
1 x 3V-6V 1:90 Single Shaft Metal Gear Motor All Metal/Half Metal Robot Intelligent Vehicle Speed Reducer TT Motor Output 110RPM