C-8-10-12-16-20-25-mm ER-8-11-16-20-A Straight Shank Extension Mini Collet Chuck

Features: * New high quality * Full range of A-type ER sizes available: ER8A ER11A ER16A ER20A. * Full range of shank diameters: 8mm 10mm 12mm 16mm 20mm 25mm. * Advanced vacuum quenching furnace can achieve carbon and oxygen penetration improve the hardness of the tool shaft improve the life and tighten the holding force. * Made of high-quality alloy steel 40CrMnTi. * Hardness hrc58-62. * Hardened precision grinding. * The extra length of the ER extension rod allows the milling cutter to enter the deep cavity machining groove for machining. * Designed for ultra-high precision and high-speed applications. Specifications: Part name: straight shank extension rod Color: as shown Material: alloy steel Maximum speed: 30000rpm Pulsation: about 0.01mm Model (optional) : C8-ER8A C10-ER8A C10-ER11A C12-ER8A C12-ER11A C16-ER20A C20-er11a C20-er16a C20-ER16A C20-ER20A C25-ER16A C25-ER20A For example: c16 - er20a - 100 l: Straight handle size :16mm Chuck size :ER20A Nut type: Type A Handle length :100mm Package contents: 1 x straight shank extension rod Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.