ACCEPTS CAT 30 TAPER SHAFTS. This is a used ERICKSON TOOL SS150EL30431 quick change device that is perfect for metalworking. With an overall length of 5 1/2 and a diameter of 1-1/2 inches, it is made of sturdy steel material. This turning tool type is a great addition to any CNC, metalworking, or manufacturing business. It is in excellent condition and ready to be used for its next project.