Rev2CQ2 

1:15 - Bottom Cylindrical Feature
1:55 - Base
5:40 - Back and Back Features
8:55 - Spine Connector
12:10 - Top Cylindrical Feature
15:40 - CounterBore + Threaded hole array / mirror
19:50 - Top Cylindrical mid section cutout + Threaded hole M8
23:10 - Rib
25:00 - Forgotten cutout for Back