‧O.D. : 7/8", Thickness : 9/32" ‧6 per set, with six #10 x 5/8” screws. ‧Zinc-plated steel ‧Sizes sold individually These cups are all countersunk for use with flat head screws and are counter-bored to fit the rare-earth magnets we sell. The exterior of the 7/8” cups for the 3/4" magnet have a ribbed outer surface designed to be press fit or glued into a 7/8” x 9/32” deep hole. They can also be mounted directly to the face of the work piece. Packaged with six #10 x 5/8” screws. All measurements given are outside diameter (O.D.) and represent the counter bore to fit the magnets, washers (sold separately). Zinc-plated steel. Sizes sold individually. 6per set. 9/32” thick.