[Material]: The angle plates are made of Metal with precision ground angles. [2 pcs Angle Plate Set]: The set includes two pieces with 45/45/90 & 30/60/90 angles. The 45 degree angle plate size is 3inchx3inchx4-3/8inch and the 30 degree angle plate size is 4inchx3-15/32inchx2inch. [Size]: The plates have four holes of 11/32inch for easy mounting and are 9/32inch thick. [Features]: The angle plates have precision grounding angles for easy installation in tools, production and inspection. [Application]: The angle plates are used for calibrating and measuring the exact angle with high accuracy. Colour:As Shown Material:Metal Package Contents: 2 x Angle Block Only the above package content, other products are not included. Note: Light reflection 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.