General description A 6 point, castellated socket designed to fit the ball joints used on Volvo B9, B11, and B12 bus and coach chassis. It is impact gun safe and specifically engineered for durability and performance. Technical specifications Drive size: 3/4""D Inner diameter: 100mm Teeth dimensions: 9.7mm long x 5mm thick Depth: 115mm Material: S45C steel with a black phosphate finish Compatibility and accessories Compatible with Volvo B9, B11, and B12 chassis For use on Volvo OEM ball joint part numbers: 20994563, 20739867, 70314325, 70321617 and equivalents Installation To help ease fitting of the socket, it is recommended to lift the ball joint gaiter.