8PC 1/2" DR impact spline bit sockets. Sizes: M5 - 6 - 8 - 10 - 12 - 14 - 16 - 18 mm. Supplied In A Blow Molded Storage Case. US PRO Industrial. US PRO INDUSTRIAL for professionals. 1/2" drive so will fit any 1/2" drive ratchets/bars/extensions etc.
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