Brand: Weld Racing Manufacturer's Part Number: 88B-515278 Part Type: Wheels Product Line: Weld Racing AlumaStar 2.0 Black Anodized Wheels Summit Racing Part Number: WLD-88B-515278 UPC: 190300093823 Wheel Diameter: 15 in. Wheel Width (in.): 15.00 Wheel Size: 15x15 Wheel Bolt Pattern (application): 5 x 120.65mm 5 x 4 3/4 in. Wheel Material: Forged aluminum Designed for Dually Truck: No Wheel Face Color: Black Wheel Face Finish: Matte/Satin Wheel Barrel/Lip Color: Polished Wheel Barrel/Lip Finish: Polished Wheel Accent Color: Machined Manufacturers Wheel Series: Weld Racing Aluma-Star 2.0 Series Backspacing (in.): 4.00 Offset: -101.60mm Wheel Construction: 3-piece TPMS Sensor Compatible: No Beadlock Included: No Beadlock Functional: No Lug Nut Seat Style: Shank Lug Nut Shank Length (in.): 0.55 Lug Nut Shank Diameter (in.): 0.69 Hub Centric Ring Compatible: No Center Bore Diameter (in.): 3.18 Center Bore Diameter (mm): 81.00mm Center Cap Included: No Lug Nuts Included: No Small Diameter Lug Nuts Required: No Valve Stems Included: No Quantity: Sold individually. Weld Racing AlumaStar 2.0 Black Anodized Wheels Weld Racing AlumaStar 2.0 is the wheel that professional drag racers use most. These black wheels are a 2-piece design with a 5-spoke forged center. Weld bolts these to cold-forged aluminum rim halves with 5/16 in. Grade 8 bolts. AlumaStar 2.0 wheels are NHRA-accepted in all classes and are over twice as strong as SFI 15.1 race wheel specs require them to be.