M6X0.25 ultra closely-pitched screws may provide higher precision adjustment function than ordinary micrometers when quantitative adjustments are not needed; these high-precision adjustment screws may be exchanged with micrometers; they are rubbing screw rods bedding in with nuts added special fat to be a set of fine adjustment device with excellent comfort, stability and durability. Pitch: 0.25mm, Sensitivity: 0.0005mm.
