I have had stainless steel M6 x 25mm flange bolts tig welded to a small batch of mudguard clamping plates and a batch of neoprene gasket/washers cut to make a better job of assembling the rear light and rear indicator bracket to the mudguard.

I had the neoprene strips cut because 3 of my boxers had lovely painted and pinstriped mudguards and I really didn't want to clamp the metal indicator bracket directly to the painted surface.  I've now fitted a neoprene strip to the underside and the top of the mudguard of my boxers and been very pleased with the result and so I've included 2 in this listing

The holes in the neoprene strips are approximately 5mm diameter which I found to be ideal to grip the thread of the bolts and hold the clamping plate in place whilst fitting the indicator bracket and rear light.  

This listing includes the following,

2 M6 x 25mm stainless bolts welded to 1 clamping plate,

2 18mm diameter stainless washers,

2 M6 stainless nyloc nuts,

2 neoprene strips