Feature: The product is made of high quality metal and has high hardness. It is suitable for long-term use and will not affect the accuracy of the work. Extended straight shank type handle, with longer handle body. Suitable for deep hole processing, to solve extend depth of processing need. For reducing the using of extended cutting tool, reduce the cost of processing, increase efficiency Various details of the product are carefully handled to ensure the stability and accuracy of the product. The extension rod diameter and other part all through precision grinding, eliminate unbalance, to increase security when cutting. Specification: Model: C16-ER11-35L Nut: ER11A Fuselage length: 40mm (including nuts) Body length: 35mm Shaft hole: 5mm; 6mm; 8mm (Optional) Model Total length(include nut) Length Trail hole External diameter of rod External diameter of hex nut C16-ERll-35L-5mm 40 35 4.98 16 19 C16-ERll-35L-6mm 40 35 5.98 16 19 C16-ERll-35L-8mm 40 35 7.98 16 19 Package list: 1 * Chuck Holder Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.