6083 MK-925D Dry Cutting Turbo Rim Blade by Supreme grade general purpose diamond blades for masonry. Other sizes available upon request Arbor 4″: 20mm – 5/8″ 4-1/2″: 7/8″ – 5/8″ 7″: DM – 5/8″ . Posted in Concrete & Masonry Tools, Diamond Blades, Masonry Diamond Blades