Features: Grinder holder opening distance: 38-41mm. Can clamp the thickness of the object: 0-50mm. This electric drill stand with unique screw rod base makes the stand- securely fixed on the table during operation, 360 degree rotation, more easy to use. Ideal- for holding small parts in jewelry,craft,model building,electronics,hobby and metal work, also a multifunctional bracket used for dremel-. It can be used to set up the perfect angle on sheets of metal for your working,you can use it as counterweights and it gives you a lot more precision- when drilling holes through wood- or metal. Package Includes: 1x Drill Stand Specifications: Material: aluminum alloy Length: approx 25.4cm/10-inch Clamp diameter: 38-41mm Fixing thickness: 0-50mm Whole height: 254mm note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.