[M12]
When tightening bolts and thread screws, it is a fastener that can be inserted into the underside of the nut.
(Inner diameter) 8mm (Outer Diameter D) 0.8 inches (20 mm) (Thickness) 2.0mm (Material) EPDM No (surface treatment) (Quantity) 4
EPDM resin washers with a seismic effect.
Suitable for protecting the original material.
Avoid using for anything other than the intended purpose. No compensation for damage or injury caused by installation.