HIGH-TECH ABRASIVE MANDRELS & CAPS. MANDRELS: Industrial rubber heads with clever ribs actually tighten grip on cap as it spins, yet are easily replaced without tools. Shank size:1/8". Mandrel only, abrasive caps are sold separately, see 631050 (coarse 80 grit), 631051 (medium 150 grit), 631052 (fine 280 grit). Maximum RPM speed 40,000. Shank size 1/8". Rubber head Diameter: 3/16", Rubber Head Length: 7/16", Overall Length: 1 1/2". 631005 MANDREL 3/16X7/16X1/8
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