This is for a joblot of plastic 4mm scale screw fit tension lock couplings. They do look to be unused.
Joblot of Plastic 4mm Scale Screw Fit Tension Lock Couplings #7
Joblot of Sharman 4mm Scale Plain Ended Axles #2
Pair of Plastic 4mm Scale Screw Fit Tension Lock Couplings Factory Sealed #2
Small Joblot of 8 x 4mm Scale Large Whitemetal Ventilators Unused #10
Joblot of 6 x 4mm scale Sprues No Idea what they are Poss Railings Unused
Joblot of 83 x 4mm Scale Single Railchairs. Look Unused