ITEM NAME:37mm DC Gear Motor L Shaped Bracket Screws Hex Coupler Kit Replacement M&E Material: Aluminum alloy Size: 44*40*43mm [Conversion: 1cm=0.3937 inch, 1inch=2.54 cm] Features: Widely used in Micro DC Gear Motor 37mm series, the material is aluminum. DC geared motor to robot smart car wheels Hex coupler. Notice: 1.Please allow 1-2mm error due to manual measurement,Please make sure you do not mind before you.Widely used in Micro DC Gear Motor 37mm series, the material is aluminum. 1 x CF 37mm DC Geared Motor Mounting Bracket Holder (With screws). DC geared motor to robot smart car wheels Hex coupler. Material: Aluminum alloy.