Milwaukee® M18™ FUEL Metal Circular Saw Kit RPM: 3,900. Blade Size: 5 3/8″ – 5 7/8″. Arbor Size: 20 mm. Hang Hook. Length 4 7/10″. Weight 6.5 lbs. Kit Includes : Saw, 2 M18 REDLITHIUM XC 5.0 Extended Capacity Battery packs, 30T Blade, Multi-Voltage Charger, Contractor Bag