Product Info Catalog Tools Power Drill, Bits & Accessories Diamond Hole Saw, 5/16-In. Diamond Hole Saw, 5/16-In. Request a Quote UPC: 82472121087 SKU: 117197 Model Number: 121085DGDS Lenox, 5/16" diamond holesaw, 1 piece design, continuous brazed edge, over sized slot for easy plug removal, no arbor needed.