Description:
1.Router collet extension for ER11A collet, featuring 4-Inch (100mm) Shank Length.
2.Milling lathe collet chuck holder, 20CrMnTi material, straight shank, clamping nut, toughened and precision ground.
3.Every woodworker has experienced bit that are just a little too short for the job, especially in router table applications or with jigs and templates that eat up the length of standard bits. Here is an easy and inexpensive solution. Collet Chuck extension fits any ER11A collet router.
4.Straight collet chuck holder CNC milling lathe ER11A collet is a good replacement part for your old one.

Specification:
Product Name: Collet Chuck Extension
Material: 20CrMnTi
Model: C10-ER11A-100L
Fit Collet Size: ER11A
Shank Dia: 10mm / 0.4"
Shank Length: 100mm / 4"
Total Length: 125mm / 5"
Accuracy: ≤ 0.008mm
Package Content: 1 x Collet Chuck Extension