Spyder 5/16″ Diamond Hole Saw Bit Automatic Center Punch Comes with 2 sharpening stones

Comes with 2 sharpening stones

spak plug fouling and port blocking

Thermostat for temperature control

72 tooth ratchet requires only 5 degree arc swing

Spyder 5/16″ Diamond Hole Saw Bit Automatic Center Punch Comes with 2 sharpening stonesUp to 20x more holes than standard diamond hole saws. Up to 10x faster than standard glass and tile hole saws. Premium boron coated, industrial diamond abrasive self sharpens for quick cuts and long life in tough tile masonry materials. High temperature, nickel braze adheres at temperatures up to 1. 5x the braze of standard diamond hole saws, for increased diamond abrasive retention. Can be used wet or dry water spray or immersion will increase tool