About this 3D model

http://www.youtube.com/watch?v=4OEjcpbdBe0 2 pcs - 608 bearings2 pcs - 626 bearings1 pcs - tap screw M6 myhb - first with 0.7 groove depthmyhb1 - second with 0.9 groove depthmyhb2 - third with 1.2 groove depth