For sale is a Lot of 10 CATV40 End Mill Tool Holders Diameters 3/16"; 1/4"; 3/8"; 1/2"; 9/16"; 5/8"; 3/4"; 7/8"; 1"; 1-1/4" Manufacturers are Parlec, Universal Eng., Richmill 2x, Lyndex, Erickson Tool, Valenite, and 3x with no name.