Comparison : Item # 1183-77915, Sait Abrasives 5 3/8 x 20mm Steel Worker Metal Cutting Carbide Blades, 30 Teeth
Item # 1183-77917, Sait Abrasives 5 3/8 x 20mm Steel Worker Metal Cutting Carbide Blades, 50 Teeth
Item # 1183-77920, Sait Abrasives 6.5 x 5/8 Steel Worker Metal Cutting Carbide Blades, 40 Teeth
Item # 1183-77921, Sait Abrasives 6.5 x 5/8 Steel Worker Metal Cutting Carbide Blades, 48 Teeth
Item # 1183-77922, Sait Abrasives 6.5 x 5/8 Steel Worker Metal Cutting Carbide Blades, 60 Teeth