The STM6-STM18 Snap On 6PT SAE Semi Deep Socket Set comprises a range of technically designed sockets, each piece has a  RB0764 mark. These semi-deep tools, made from hard-wearing materials, provide the perfect blend of standard and deep socket, granting accessibility in narrow areas. Their 6-point configuration grip the sides of fasteners, reducing the risk of round-off. With wide-ranging sizes from STM6 to STM18, they offer flexibility for varying mechanical requirements.