bearing_Pin_8mm MK7 Type Extruder V2.4

this is a 8mm bearing pin PLA Printable for
MK7 Type Extruder - Heavy Duty Extruder_v2.4.stl
http://www.thingiverse.com/thing:27284
original author did not have it and using metal pin not a bad choice but hopefully it will help some one urgently
Bearing I use 10x7x19mm