... RangeGauge Interval(μm)Preferred Gauge(μm)101/16”~1”1-10,…..,-1,0,+1,…..,+9281/16”~1”2.00-12,…..,-2,0,+2,…..,+12401/16 ... ,…..,+603001/16”~1”--5001/16”~1”--10001/16”~1”--Applications :1,C10-C15 balls are case-hardened only(surface heat treatment),low carbon steel balls offer considerable ... ,blocks,toys.Any further Information,Plz contact us! AISI 52100 Chrome steel balls