Item Type: Router Collet Adapter <br>Product Material: Carbon Steel <br>Product Colour: Black <br>Inner Diameter x Outer Diameter x Height: Approx. <br>6.35 x 12.7 x 28mm / 0.3 x 0.5 x 1.1in <br>8 x 12 x 28mm / 0.3 x 0.5 x 1.1in <br>6 x 12.7 x 28mm / 0.2 x 0.5 x 1.1in <br>6 x 12 x 28mm / 0.2 x 0.5 x 1.1in <br>6.35 x 9.5 x 30mm / 0.3 x 0.4 x 1.2in <br>10 x 12 x 27.5mm / 0.4 x 0.5 x 1.1in <br>8 x 10 x 25mm / 0.3 x 0.4 x 1in <br>6 x 8 x 25mm / 0.2 x 0.3 x 1in <br>6.35 x 8 x 25mm / 0.3 x 0.3 x 1in <br>Function: Can be used to clamp drill tools, boring tools, engraving machine, reamer, etc.<br>1、9PCS SET: Comes with 9pcs router collet adapter in different sizes, this set will surely satisfy your various working needs. <br>2、FIRM CLAMPING: These router chuck not only ensures firm clamping, but also enables high accuracy and stable holding. <br>3、PRACTICAL USE: Used for chuck conversion of CNC machine tools, suits for drill tools and chucks with different features. <br>4、CARBON STEEL: Forged with premium carbon steel material, which has high flexibility and good wear resistance as well. <br>5、GOOD DURABILITY: Processed by heat treatment and accuracy grinding, not easy to deform, durable for long term use.Please clamp the cutter head when using it, and work only after it is firm and stable.9 x&nbsp;Router Collet Adapter