Do you have a Losi Super Rock Rey or other vehicle that uses 20mm wheel hexes and want to use a 3.8″ class wheel and tire combo? Pro-Line has a simple and effective solution for you with these 8×32 to 20mm aluminum hex adapters. Not only do these convert your 20mm hexes to an 8×32 pattern but they are clear anodized for long-lasting good looks. These adapters are sold in pairs and fit any of Pro-Line’s 8×32 wheels.
Link: https://www.prolineracing.com/performance-parts/8×32-to-20mm-aluminum-hex-adapters.asp