Floor King 45020 Comparable to Roberts 10-42, 4-1/2 D x 20 Teeth x 20mm Bore (with 5/8" bushing) x ATB Grind Designed for 10-40 & 21600 Jamb/Undercut Saws (Jamby Saws), Carbide Tipped Saw Blade
Amazon.com: Circular Saw Blade Bushings Ring - 5/8” to 3/4” Washer Reducing 1.2Mm Thickness 3Pcs : Patio, Lawn & Garden
20 Pcs Saw Blade Bushing Set Saw Blade Adapter Ring Saw Blade Spacer, 1 Inch to 20 mm, 1 Inch to 5/8 Inch, 7/8 Inch to 5/8 Inch, 20 mm to 5/8 Inch, 5/8 Inch to 1/2 Inch, 4 Per Model - Amazon.com
7-1/4" 52 Tooth TCT Saw Blade For Steel and Metal | Metal Cutting Blade - Benchmark Abrasives
Team Husqvarna K760 14" Circular Saw Kit - STD7614
EDiamondTools 7 in. Vacuum Brazed Diamond Saw Blades for Metal, 3 mm Segment Height, Diamond Arbor with 7/8 in. Bushing VB07A8_THD - The Home Depot
DIABLO 5-3/8 in. x 50-Tooth Aluminum Cutting Circular Saw Blade with Bushings D053850NMX - The Home Depot
BORE REDUCTION RINGS FOR CIRCULAR SAW BLADES – Woodline USA
EDiamondTools 7 in. General Purpose Segmented Saw Blades for Concrete & Masonry, 10mm Segment Height, Diamond Arbor w/ 7/8 in. Bushing SG70X - The Home Depot
12PCS Saw Blade Bushing Set Saw Blade Adapter Ring Saw Blade Spacer 1Inch to 20mm, 1inch to 5/8Inch, 1inch to 7/8Inch, 7/8Inch to 5/8Inch, 20mm to 5/8Inch, 7/8inch to 20mm - Amazon.com