Set consists of two triangles - one 6" 45°/90° and one 8" 30°/60°. Both are ruled with inch and metric calibrations and feature beveled edges and cut out centers. C-Thru KT-90 Triangle Set KT-90$3.50 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.