This is an ER32 Driven Axial Lathe Live Tool Holder w/ VDI40 Shank. Please note that this unit is missing the collet clamping nut. Fits Haas SL-20 & SL-30 Lathes. Maximum Operating Speed: 4,500 RPM. Overall Dimensions: 6-1/4″ x 3-1/4″ x 3-3/8 high. Comes exactly as shown in pictures.