NEW SOUTHWEST SPEED 14 BLADE RAZOR TIRE SIPER, SIPING TOOL, GREAT TO CUTTING RACING TIRES TO ALLOW THEM TO HEAT UP FASTER, MODIFIED, LATE MODEL, STREET STOCK, SPRINT CAR, MIDGET, FACTORY STOCK, GRAND NATIONAL, PURE STOCK, MINI STOCK, DWARF CAR, LEGENDS Brand New Southwest Speed Racing 14 Blade Razor Tire Siper (SWS Part # 790-2754) Great For Cutting Racing Tires To Allow The Tire To Heat Up Faster The Siper Takes 14 Standard Razor Blades, Which Are Included Each Side Contains 7 Blades; Lower One Side For 7 Cutting Blades Or Lower Both Sides For 14 | * This Deluxe Siper Makes Siping Tires Much Easier, As It Has Plenty Of Grip And Leverage Takes Standard Utility Blades | * Used To Quickly And Precisely Sipe Tires For Better Traction | * Lightweight Aluminum Construction