It's a block! It's a ring! It's the BX0X08DCB! These hefty blocks are double-counterbored for use with a #10 screw. The BX0X08DCB is counterbored on both sides, so it is reversible. A unique block that can be used for a wide range of applications where a strong attractive or replusive force is required. Great for easily attaching a very powerful magnet to a surface that it would not normally stick to.
Also available in this size: BX0X08-N52
(Grade N52, no hole), BX0X08
(Grade N42, no hole), BX0X08DCSPC-BLK
(Grade N42, Double Countersunk, Black plastic coated)