sphere 50mm with screw

sphere 50mm with screw


On the 1rst picture:
http://www.thingiverse.com/thing:380408 (sphere)
http://www.thingiverse.com/thing:370711 (bar mount)
http://www.thingiverse.com/thing:380240 (tube cap)
http://www.thingiverse.com/thing:379273 (bottle screw)