Product description "Leaf Audio - Raised Thumb Screw Set (4 Pieces)"
4 pieces of M3x20 thumbscrews with spacer for use with Leaf Audio Microphonic Soundbox/ Microphonic Playground.
A set of 4x raised thumb screw M3x20 including a spacer for Microphonic Soundbox, Microphonic Playground and many other applications.