M45 PORTAL | Finish GLOSS BLACK MACHINED | size desc 15X7 | lug count 4.0 | bolt pattern metric 4X137 | bolt pattern standard 4X137 | offset 10 | backspacing 4.39 | centerbore 96.0 | load rating metric 453.0 | load rating standard 1000.0 | division 20 | barrel config S | shipping weight 20.49 | box label desc G-BLK MACH | finish warranty ONE YEAR | structural warranty LIFETIME | rivet part no NONE | lip depth 1.36 | construction type Cast Aluminum | bolt pattern mm12452 137