No markings to indicate what brand these are. Feel free to contact with any additional questions. The item "375 Collet Set (4 Pcs.) 750 Head 3/8" is in sale since Wednesday, October 31, 2018. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding\Other Welding Equipment".The seller is "milvac" and is located in 83402. This item can be shipped to United States.