Westcott 4 Piece Flexible Math Tools Set, Assorted Colors, Green/Clear (15992) 4 Piece Flexible Math Tools Set comes complete with a 45/90 Triangle, 30/60 Triangle, 180 Degree 6" protractor and a 6" ruler Flexible and shatterproof Laminated for durability Translucent color allowing for viewing through to the page Perfect for use in the home or classroom