Grinder Holder Opening Distance: 35-43mm(1-3/8″-1-11/16″) Can Clamp The Thickness Of The Object: 1-53mm(Max:2-3/32″) Head Rotates 360 degrees and Tilts 45 degrees.Material: Aluminium Alloy 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