Mesee 1/2'' Shank ER20 Router Collet Extension Chuck Adapter with 1/4'' & 1/2'' ER20 Spring Collet Set Milling Cutter Bit Chuck Extender Rod Woodworking CNC Milling Bits Rod Holder

• Made of high-quality alloy steel, high precision, good toughness and sturdy for long time
• 1/2" Shank ER20 Router Collet Extension Rod, Extend your router bits to provide the full depth of cut
• 2 Pieces ER20 spring collets with different clamping diameter: 6.35mm & 12.7mm, meet your various need
• Put the collet you need into the chuck nut of the collet extension rod, allow to accept 1/2 inch & 1/4 inch shank router bits and milling bits.
• Great for clamping screw tap, drill, milling cutter, reamer, etc. suitable for CNC Woodworking engraving & spindle machine, milling lathe tool

Mesee 1/2'' Shank ER20 Router Collet Extension Rod Collect Chucks Adapter with 12.7mm & 6.35mm Spring Collets Made of high-quality alloy steel, high strength, good toughness, strong shock resistance, durable for long life. Great for CNC Engraving Machine & Milling Lathe Tool Holder, easy to use, better to control, it will improve your work efficiency. Place the router collet extension shank in the 1/2-inch router collet and the router bit shank in the extension collet and tighten both. Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut instead of short shanking your router bits. The router collet extension chuck comes with two different spring collet chucks, accepts both 1/4" and 1/2" shank router bits for converting and extending. Widely used, boring, milling, drilling, silk attack, sculpture, CNC, and other processing, perfect choice for professionals and hobbyists, Provides many conveniences to your daily woodworking. Warm Tips: M Type ER20M wrench NOT included. Need M Type ER20M wrench to tighten the collet. Please search ASIN: B08X2PQ4TC on Amazon if you need. Specifications: ER20 Router Chuck Extension Rod Shank Diameter: 12.7mm/ 1/2'' Overall Length: 86mm/ 3-3/8'' ER20 6.35mm Spring Collet Chuck Model: ER20 Clamping Diameter: 6.35mm/ 1/4'' ER20 12.7mm Spring Collet Chuck Model: ER20 Clamping Diameter: 12.7mm/ 1/2'' Package Included: 1 x Router Chuck Extension Rod 1 x ER20 12.7mm Spring Collet 1 x ER20 6.35mm Spring Collet