HHIP 7 Piece angle block set includes one each of 15, 30, 45, 50, 60, 75 and 90 degree . Quick setup set from 15 degree to 90 degree . Hardened steel to HRC52-58. Supplied in a fitted case. Blocks are 5mm thick. 2 sides of each triangle are 70mm. Accuracy is +/-5. Product Specifications: Angle: 15A degree 30A degree 45A degree 50A degree 60A degree 75A degree 90A degree ; L: 18.3 36.2 53.6 59.2 70.0 85.2 70x50; Thick: 5 5 5 5 5 5 5. Weight (lbs.): 1.0000.