["1.9 Beadlock design dont need to glue." CNC machined and aluminum anodized finish. Negative offset -10.4mm widen wheel spacing and provide better stability. Fits 12mm hex hubs and most 1.9 inch size tiresgood upgraded parts replacement of the stock. Suit for 1/10 RC Crawler Auto Axial SCX10 90046 AXI03007 TRX4 VS4-10 Gen8 MST CFX SCX10 Pro.]