Description: Made of high quality hardened steel, Precision ground. For grinding and milling machine applications. Any conceivable angles to these increments can be established. Easy to carry: complete in custom wooden case. Set includes the following angles: 1, 2, 3, 4, 5, 10, 15, 20, 25, 30 degree Specification: Material: steel 65Mn Degree:1 to 30 degree Accuracy +/-20 sec, 0.0001" per inch Size(thickness x length): 1/4" x 3" Quantity: 10pcs/set Case size: approx. 25cm x 20cm x 10cm/9.8x7.87x3.94inch Package Includes: 10 Pieces Angle Blocks