The Heiniger Saphir/Opal Hinge is a replacement part for the Heiniger Saphir and Opal cordless clippers. It is the part that holds the blade in place and allows it to move smoothly. It is made of durable metal and has a rubber pad that cushions the blade. The hinge is easy to install and remove with a T9 Torx screwdriver. It is compatible with all snap-on blades and has a built-in battery level indicator. The Heiniger Saphir/Opal Hinge is a vital part of your clipper that ensures optimal performance and longevity of your blades.