Lambretta Headset bottom quick easy fit screw for Series 1, 3 and GP/DL headsets (NOT series 2, these are also listed on this website here), designed by MB and made in staineless steel.
 
These screws are knurled for grip to easy hand fit and instead of bending down to tighten screws with a screwdriver you can now fit them by hand and nip them up with a spanner to leave a nice simple screw hanging down.
 
Price is for just one screw. 
 
 
Part number: LUMBP0679