Pack of 6: 5/16" BSC stainless steel nyloc nuts - for applications where you do not want the nut to loosen (under mudguards etc)
Very useful on Norton singles that tend to vibrate, these nyloc stainless nuts are very nice quality and useful in areas prone to vibrtating loose. Being full nuts - they look nice as well, and not entirely out of place, even on an old bike - I often use these myself in areas not too visible
Update May 2022: now back in stock, apologies on price increase . . . but the price of stainless steel has had a huge increase and these may be the last of these I will be able to get for some time