Description: [Durable Material]: Fixed holder bracket for square hole drill is made of material, wear resistant, high hardness, sturdy and durable. [Fitment]: The square hole drill bit adapter converter Clamping range 38-45mm, inner hole 11cm [Bench Drill Mortise Accessories]: Woodworking drill guide is easy to install and remove, you can quickly install or remove it yourself, fast and convenient. [Note]: Square hole drill bit adapter, products do not include square hole drill and electric drill, dual use support bracket for table drill and hand drill. [Wide Application]: Drill jig bracket is perfect for woodworking, ensuring accurate and smooth drilling.<br><br>Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Material: Metal colour: green<br><br>Package Contents: 1 x Square Hole Drill Bit Adapter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.