Twist test: L30 R30, remove only 2.6 MM from 200.-roll 30 roll right around 30 rounds using measuring Microscope, no dust, no cracking, no dots per line. See external eyes color must not be changed, no rust.
Twist test: L30, R30 out 200 times from the 2.6 MM. Rolls left around 30. rolls right around 30 the Microscope measure, no dust, no crack, no dots per line. viewed from the eyes Exterior Color not change, no rust.
Twist test: L30 R30 took 200 as, from the late 2.6 MM. Roll around the left 30 roll right 30 around Use Microscope measuring line, no dust, no cracking, no joint lines Look from external sight color must be changed, no rust