ALPHA | Finish MATTE BLACK W/ SAND LIP | size desc 18X9 | lug count 6.0 | bolt pattern metric 6X135 | bolt pattern standard 6X135 | offset 20 | backspacing 5.79 | centerbore 87.1 | load rating metric 1678.0 | load rating standard 3700.0 | division 10 | barrel config S | shipping weight 37.75 | 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 mm4222 135