KEMPSTON 88024 Kempston Wet/Dry Mini Diamond Hole Saw, 3/16" KEMPSTON Wet DRY Diamond Mini Hole Saws are designed and constructed by unrivalled knowledge and expertise of brazing and coating edges and surfaces with the very hardest of materials KEMPSTON Wet DRY Diamond Mini Hole Saws are for fast smooth cutting in all grades of hard and soft tile. Excellent performance on corded or cordless power units (1500-2000 rpm) Diameter MM: 5