CRAFTSMAN 3-in Bi-Metal Non-Arbored Hole Saw in the Hole Saws & Kits department at Lowes.com
Amazon.com: Acekit 3 inch Hole Saw With 3/8 Arbor HSS Bi-Metal Hole Saw Blade And Variable Teeth Pitch For Wood,Plastic Board,Pipe,Plywood,And Soft Metal Sheet (76mm) : Tools & Home Improvement
Milwaukee 3 in. Hole Dozer Bi-Metal Hole Saw with 3/8 in. Arbor & Pilot Bit 49-56-9670 - The Home Depot