Molded-composite diff drive shaft adapters for #305184/305188 XRAY Composite Solid Axle. Modular design with composite production shafts permits effortless elimination and super-easy servicing. Internal slots key to driveshaft pins without requiring use of driveshaft blades, allowing direct power transfer to your tires and eliminating extra play associated with the outdrives and drive shafts. Pair of 2.