We’ve hit pay dirt here at Flying Pigeon LA – a source of high quality, machined 9.5mm cotters. I just added them to our online shop:
These steel slugs fix a bicycle’s crank arms to it’s bottom bracket, and they are hard to come by here in the U.S.
The cotters that do make it here to the U.S. are generally very cheaply produced – they are snipped off the end of a pole of steel, and they carry deformities which makes using them a pain.
The new cotters we picked up are nicely machined (nice an uniform in their manufacture), made out of quality steel, and are offered to you at the same low, low, price of $1.50 ea. We’ve got a couple hundred in stock, but the last batch (of lower grade cotters) went pretty quickly.
You pick yourself up a few by visiting our shop!
On a side note: I’ve tried these on an old Raleigh (which took 3/8″ cotters) and they worked (so far). For reference: 3/8″ = 9.52mm.