Inner Diameter*Outer Diameter*Thickness
29.7mm*35mm*2.5mm; 1.17″*1.38″*0.098″
Cautions
Don’t use in seawater environments.
Not Suitable for thick keys, the amount of deformation is less than 5mm, about 0.2″.
This item contains small parts, pls keep away from children to prevent swallowing.