R2,R3,R4,R5 regrooving blades, choose option (20 per pack)
R2 = 5mm - 8mm cutting width 7mm cutting depth
R3 = 6mm - 15mm cutting width 10mm cutting depth
R4 = 8mm - 16mm cutting width 12mm cutting depth
R5 = 10mm - 18mm cutting width 12mm cutting depth
