RDRP’s Battery Thumb Nut for the Team Associated B74 buggy is larger in diameter for improved grip and easier battery swaps as it can be fastened or undone without tools – different from the kit B74 thumb nut that requires the use of a 7mm nut driver. The thumb nut is machined from high-quality 7075-T6 aluminium, it comes with silver chamfered edge details for looks and an anodised surface for wear. The thumb nut is a direct replacement, usable with all common B74-series battery braces.