the flat disc is precision machined from mild steel to 8 7/8 diameter
MODIFIED FLAT DISC
Precision machined and features a bevel machined on the outer edge of the back side of the disc, it is good for getting into tight spots( e.g. slip joints)
1-DEGREE BEVEL DISC
Precision machined with a 1 degree bevel. it is primely used when grinding long blades, only 1/2 the disc contacts the blade. When flat grinding on the left side of the disc the right side will not contact the blade and when grinding on the right side of the disc the left side will not contact the blade!