Specifications:
Size: 8mm to 12mm
Shank Diameter: 8mm / 0.31"
Accept Shank Diameter: 12mm / 0.47"
Shank Length: 30mm / 1.18"
Total Length: 83mm / 3.3"
Material: Carbon Steel
Finish: Silver Oxide, Fine Grinding
Package Content: 1pcs x Router Collet Extension Rod Converter

Descriptions:Made of carbon steel for high hardness and strength. Silver oxide finish for corrosion and wear resistance.
8mm shank router collet extension rod converter accepts 12mm shank router bits for converting and extending.
Extend the router bit to provide the full depth of cut with the extension rod adapter. Reduce the danger of removing the shank from the collet.
Suitable for woodworking trimming, milling, engraving machine. The router collet converter can provide the additional depth of cut to improve work efficiency.
Just place the extension shank in the router collet, and the router bit shank in the extension collet, and tighten both. Notice: The speed should be slow at the beginning of use, and slowly speed up after the rotation is stable.