Great Handy Little Tool for woodworker, Easy to Mark Out Accurate DovetailsAccurate Dovetails Layout, CNC Machined for Precision4 Kinds of Proportion Marked For Hardwood or SoftwoodEasy to use, makes everything simple, uniform and consistent.Colour:blackMaterial:aluminumSize:Length: 7.4cmPackage Contents:1*Dovetail MarkerOnly the above package content, other products are not included.Note: Light shooting 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.