Please bid only if you are certain of prompt and reliable payment, receipt, and communication. (If paying at a convenience store, please complete payment within 12 hours of purchase.) Genuine Mac Tools product Demo tool for Advanced Hex, not for sale Rare, new, and unused item!! When it comes to removing stripped hex bolts, extractors are common, but Advanced Hex is different. It can remove 98% damaged hex bolts without hammering, and amazingly, it can also turn undamaged bolts without causing any scratches. This is an excellent tool. This is a demo sales promotion tool to help you experience and understand it. (Those who understand the relationship between the hex bolt and the contact surface will understand the principle.) The right side is a 98% damaged bolt hole, The left side is an undamaged bolt hole. The socket is the same as the standard product, so it can be used as a regular tool if you remove the ball chain. (Drive size is 3/8sq) (Size is hex M6) There may be some scratches or minor imperfections from the time of purchase. Tools are tools, not works of art. Please refrain from purchasing if you are concerned about minor details! To prevent substitution, we do not accept refunds, returns, or exchanges after payment.