Profile: Yueh Chi Enterprise Co., Ltd. specializes in pneumatic tools and related products. We are an ISO 9001 certified company. Our products include impact wrench, air ratchet wrench, air screw driver and air sander. Our composite impact wrench has a durable compact twin hammer mechanism and a durable composite housing with an aluminum hammer case; through this, the handle exhaust directs the air away from the operator and the work piece.