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Upper (rear) shaft balancer bearing is standard on all Random Orbital Sanders and Orbital Sanders aids in proper alignment for precision balance.

3M&trade; Ball Bearing - 6000ZZ Upper Shaft Balancer, 2 Shields A0021, 1 per case

3M&#8482; A0021 Ball Bearing-Upper Shaft Balancer-2 Shields, 1 Pkg Qty

a0021-ball-bearing-upper-shaft-balancer-2-shields-1-pkg-qty

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