2PC 1/8 1/4 1/2 3/8 BSP Male Thread 6mm-16mm Straight Barb Tail Brass Connector. 6-100mm Diamond Core Hole Saw Hole Cutter Tile Porcelain Glass Drill Bit Cutter. 5-35mm Titanium Step Drill Bit High Speed Steel Spiral Grooved Drilling.
eBay