cutting blade for optical glass zoom lens 1.diamond cutting blade 2.high strength ... industry's electronic components and mechanical precision parts for cutting off and grooving.It has a series ... materials Diamond abrasive cut-off wheel Its commonly used for a variety of non-metallic materials ' grooving and ... ,5055,58,6070,75,76.2,7880,100,101.6,110114.3,117,125127,152.4thickness tolerance 0.07 ...