Materials :
Best quality SS-420 stainless steel (investment castings) precisely heat-treated, ground & Super- Lapped to mirror finish.
Quality :
100 % inspection for surface finish and size is controlled within ± 10 microns for each set of 3 (or 4 ) pieces
Packing :
Sets of 3 or 4 pieces having size within ± 10 microns are packed separately.