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 efficiencyVarious 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-ER11-35LNut: ER11AFuselage length: 40mm (including nuts)Body length: 35mmModelTotal length(include nut)LengthTrail holeExternal diameter of rodExternal diameter of hex nutC16-ERll-35L-5mm40354.981619C16-ERll-35L-6mm40355.981619C16-ERll-35L-8mm40357.981619Package list:1 * Chuck HolderNote:The actual product color may deviate from the photo due to light.There may be a slight deviation in the measurement of product.