Features Premium Hard Alloy Construction: Crafted from high-strength hard alloy, this collet extension ensures durability and longevity, minimizing the risk of breakage during use Superior Clamping Force: Experience unmatched stability with an extremely powerful clamping force, allowing for precise and secure operation while working on your projects Adjustable Engraving Distance: This extension rod allows you to conveniently adjust the distance between your edger and drill bit, optimizing your engraving machine for better results Enhanced Flexibility in Projects: By extending the shank length of your router bit, you can tackle a wider range of woodworking tasks with increased flexibility and ease Versatile Shank Sizes Available: Choose from 1/4, 8mm, or 1/2 shank options for easy compatibility with various tools, making it user-friendly for all your woodworking needs Features: 1、Made of hard alloy, high hardn, high strength, not easy to break. 2、With extremely powerful clamping force to ensure stability during using. 3、Can extend the distance between the edger and the drill bit of the engraving machine, making the engraving distance more suitable. 4、Extend the shank length of router bit and make your woodworking project more flexible. 5、1/4 shank, 8mm shank and 1/2 shank for your choice, easy to use. Specification: Item Type: Trimmer Extension Rod Material: Cemented Carbide Optional Milling Cutter Extension Rod: 1/4 Shank, 1/2 Shank, 8mm Shank Optional Weight: 1/4 Shank: Weight: 107 g / 3.8 oz(approx.) 8mm Shank: Weight: 84 g / 3 oz(approx.) 1/2 Shank: Weight: 131 g / 4.6 oz(approx.) Package List: 1 x Extension Rod Package List 1 x Extension Rod