02602 (Red letter 500#-600#）superfine. 02604（Red letter 320#-400#）fine. 02601（Blue Letter 800#-1000#）ultrafine. 02600（Green Letter 1200#-1500#）microfine. 114MM 139MM. When you need to sand a location that is challenging to reach, or need to uniformly sand a unique profile, choose a 3M Softback Sanding Sponge for its ability to conform to most any shape or reach difficult spots. ).
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