Unbranded Only marking is AN-9. This is an extreme heavy duty impact adapter. It weighs 1 pound, 2ounces. It is 5 inches long. The diameter of the 1/2” female end is 1-1/4”. Below that is a 3/4” hole where a rod can be inserted for extra torque. Probably it is worth more but I’m asking only $10 plus shipping for this tool. Shipped fast. Thanks.