robotdigg 2018-04-04 06:21 2018-04-04 06:21 http://robotdogg.com/d/1155/What-size-bolts-do-I-need-to-use-for-the-MGN12-linear-rail-and-carriage? MGN12 linear rail M3*8 and its carriage M3*3.5 M3 hex socket button head screw works
