31 Piece Magnetic Long Ball End SAE/Metric/Torx Hex Key Set Keys made with alloy steel for maximum strength and to resist rotational distortion. Chamfered edges on both ends help guide the key into the fastener smoothly and quickly. Ball end design provides greater access, increasing entry angle to 25 degrees. Magnetic end offers efficiency by keeping key attached to fastener in tight work areas. Short or long side can be used, providing better access and speed in all situations. Sizes clearly marked on caddy for easy identification. Meets or exceeds ASME standards. Includes caddy for storage and organization 83527