Aduoke Thread Model: M14Diameter: 50 mm (As pictures show)Top Self-locking Pressure Plate Thickness: 13mm (approximately)Warm Tips:If the torque is too much to remove, you can line the holes with a regular 2 prong wrench to remove it. Please check the nut for defects and damage before use to avoid safety accidents.Material:metalcolour:SilverPackage Contents:3 x Angle grinder pressure plate3 x bottom plateOnly the above package content, other products are not included.Note: Light 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.