M3 and M4 Screw Connecting Bolts with sleeves for Door Handles, Roses, Knobs and Escutcheons. Note: M4 screws are not security screws and therefore are not suitable for external door handles. How to use: Drill a hole through the door leaf, place door handle on the door to match up with the hole drilled and push the screw trough the door handle, door leaf the handle on the other side.
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