Product description
high carbon steel, the hardness of the 50-55, the high positive and negative to
lerances of 0.3 wire =0.003 mm, smooth surface smooth work very well.
Common use of carbon steel ball: ball, welding, decoration and so on the ball, on the hardness and size requirements is not high best choice!
Color: as the picture shown
Size:1mm,1.2mm,1.5mm,1.588mm ,2mm,2.381mm ,2.5mm,2.78mm
Packing list:According to your choice
Statement: the purchase of precision steel ball friends, if on our ball precise generation of doubt can with micrometer and pictures sent to us as evidence. The ball is after the factory inspection, and we own more than two caliper, is a real national standard steel ball.