Expansion sleeve

These spreading sleeves are designed to be simply inserted with a hammer into a 10 mm diameter hole in a wooden panel. Once installed, they allow, for example, a hinge to be screwed in and removed multiple times without losing holding strength, as would happen if the screw were driven directly into the wood. Height – 11 mm Diameter – 10 mm – hole for inserting the sleeve Internal hole diameter suitable for wood screws Ø3.5–4.0 mm or m4