Radtec BD7 -1mm hard-coated pivot balls
From Radtec for the Yokomo BD7 comes a set of low-profile pivot balls that sport a reduced height to allow for more traction in corners when used as camber link ball studs. 1mm lower in height than the original Yokomo ZC-206SH parts the 4.3x10mm balls come made for hex head wrenches and they sport a hard-coated surface for super-smooth suspension operation.
Source: Radtec [radtec-rc.com]