High quality aluminum material. 
Suitable for brushless motors and speed controllers. 
Delicate workmanship. 
Motor axle hole diameter:Approx.3.17mm. 
Single item size:Approx. 2.6 * 1.2cm(L * D) 
Color:Silver 

204 2212 2208 2216 2218 22 Brushless Outrunner Motor Mount X type Cross holder
1 pcs cross mount
4pcs screws
for 22 series motor
16mm/19mm