Internal plastic insert to protect the wheel bolt surface. 17 mm x 85 mm x 30 mm - 8790 C Wheel Impaktor Socket with 1/2" Drive. 19 mm x 85 mm x 30 mm - 8790 C Wheel Impaktor Socket with 1/2" Drive. 21 mm x 85 mm x 32 mm - 8790 C Wheel Impaktor Socket with 1/2" Drive.
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