Muaj ntau ntau cov grits rau daim ntawv sander.
Tus qis qis tshaj thaj tsam li 40 txog 60. ...
Mediumgrit sandpaperranges ntawm 80 rau 120 abrasives ib square nti. ...
Cov ntawv zoo pib thaum 150gritand xaus ntawm 180grit. ...
Zoo heev, 220 txog 240grit, thiab ntxiv nplua ntxiv, 280 txog 320grit, yog qhov zoo tshaj plaws.
