Half Inch Shank ER20 Router Collet Extension Rod For DIYers And Pros With Quarter Inch And Half Inch ER20 Spring Collets For Milling Cutter Chuck Extender In Woodworking And CNC Projects

ER20 Router Collet Extension Rod with 1/2in Shank
✔️ 2-piece set with ER20 collets 6.35mm & 12.7mm; 86mm length

This ER20 router collet extension rod is built from high-quality alloy steel for strength and long life. It extends your router's reach, letting you cut deeper without pulling the bit out of the collet. Ideal for CNC wood and metal projects, engraving, and milling tasks in shops and workshops.

✅ Shank diameter: 12.7mm (1/2")
✅ Overall length: 86mm (3-3/8")
✅ Includes ER20 6.35mm and 12.7mm spring collets

Parameter	Metric	Inches
Shank diameter	12.7mm	1/2"
Overall length	86mm	3-3/8"
Spring collet clamp	6.35mm	1/4"
Spring collet clamp	12.7mm	1/2"

💡 What is an ER20 router collet extension used for in CNC milling?