5/8" Copper Helix 150 grit bit with Allen Key.

These bits feature an integrated spiral thread moulded directly into the brass base or bottom of the bit. As the grinder spins at high speeds, this thread acts like a mechanical screw pump, physically lifting water from the reservoir up to the diamond grinding head. This completely eliminates the need for a sponge or an external water pump.

To install , consult with the owners manual for your grinder.

Lubricate the bit before putting it on the shaft. If the Grinder is idle for more than a week remove the grinder bit, this will ensure the bit does not fuse to the shaft. It will also give you the opportunity to inspect the shaft and bits and apply lubricant regularly.

You can use Vaseline as a lubricant.

Always wear safety glasses when in use or changing bit and keep away from children.