ALPHA | Finish MATTE BLACK W/ SAND LIP | size desc 18X9 | lug count 8.0 | bolt pattern metric 8X180 | bolt pattern standard 8X180 | offset 20 | backspacing 5.79 | centerbore 124.2 | load rating metric 1678.0 | load rating standard 3700.0 | division 10 | barrel config S | shipping weight 39.2 | box label desc M-BLK SAND-LP | finish warranty nan | structural warranty nan | rivet part no BRRBTARYSTUD | lip depth 1.22 | construction type Cast Aluminum | bolt pattern mm4229 180