HUAREW 7 Inch Forstner Bit Extension for Adding Over 5-3/4 inches of Drilling Depth to Your 3/8" Round Forstner Bit, Suitable for Process Wooden Furniture,Timber etc

Product: forstner bit extension, can extends any Forstner bit shank an additional 5-3/4 inches, reach to bore deeper into your projects Texture of material: The forstner bit extender is made from solid, heavy duty machined steel. Precision ground and polished surfaces, structural stability Size: collet inside diameter: 3/8 inch(9.7mm), extend Length: 5-3/4 inch, total length: 7 inch Parts: Two set screws and hex key included. Tighten the screw before use to prevent the drill bit from slipping when rotating at high speed Simple & Efficient: The inside diameter of our forstner drill bit extension collet is 3/8 inch,so it will only fit forstner drill bits with 3/8 inch or smaller shanks. drilling depths of 5-3/4 inch, which require only simple installation for deeper holes