Model: 7mm-25mm Button Drill Bits Durable Sharpening Pins

Diamond Grinding Pin for Tophammer Button Bits Sharpening. To get the best grinding effect, you should use the No. 1 quality grinding cups(grinding pins) made by RICHDRILL company.
RICHDRILL makes and supplies 4 models of grinding cups(grinding pins) as below:

Diamond Grinding Pin for Tophammer Button Bits Sharpening

Our factory specializing in producing diamond Button Bits grinding cups / grinding pin. It's a perfect tool for grinding your broken or worn button bits, to prolong it's lifespan.

To get the best grinding effect, you should use the No. 1 quality grinding cups(grinding pins) made by RICHDRILL company.

BESTLINK makes and supplies 4 models of grinding cups(grinding pins) as below:

wing(shoulder drive), with 8mm shank/shaft.

san-drive, with 9mm shank/shaft

55-drive

hex-drive