* Nickel Bond
* 1.00" hole
* The diamond disk in 100 grit is a medium grit diamond used for surface preparation levelling of glass pieces. Disks are magnet backed for easy application and removal on lap grinder metal wheel heads
* Electroplated on fiberboard substrate with copper laminate for rust-free operation over the lifespan of the disk.
* Manufactured in U S A by a major manufacturer.