Amazon.com: FCH056M Fast Cut Bi-Metal Holesaw 56mm : Tools & Home Improvement
Makita 56mm Standard Bi-Metal Holesaw D-35483 | tools.com
Amazon.com: 1 pc Carbide Tip Drill Bit Hole Saw 12-150mm Drill Bit Set Hole Saw Cutter For Stainless Steel Metal Alloy Drilling,56mm : Tools & Home Improvement
Milwaukee 49-56-0129 2-13/64" 56mm Bi-Metal Hole Saw Hole Dozer USA
7 Pcs Hole Cutting Saw Sets 25mm 32mm 38mm 45mm 50mm 56mm 63mm for Soft and Hard Gypsum Board Small Vibration - AliExpress