Facom 6 Piece T Handle Hexagon Allen Key Set Metric Base Diameter and Material Thickness 2.5 1 1.9 1.8 1.8 1.7 1.5 2 1 1 1.7 1.3 1.7 0.5 2 3 3 6 2 3.6 2 4 2 1.5 0.5 2.8 1.7 0.4 3 3 2 0.7 1 1 1.9 0.4 3 1 1.9 1.7 4 4 2.6 2 50 0.8 2 1.8 1.8 0.6 3 7 1 1.9 2 1 0 3 The kit comes in two pieces. The base piece comes in a 1/8" diameter and comes in a 1/2" thickness. The kit comes in three sizes, 3.8-6.5", 3.8-6.5" or 3.6-6.5". Measurements The kit is about 1 1/32 in diameter (about 2" wide) and comes with a base kit. It has a base for a small piece of metal that you can attach to the sides of the base. This is a base that can be held in place with your thumb (such as a piece of cardboard). In the back of kit were pictures of what it will look like. I had hoped to make a picture of the bottom and top of the kit, but the