I had purchased similar to these earlier but unfortunately at the last 'service' the mechanic didn't tighten them down and one was lost. No longer available from DPM (they were extortionately priced anyway). Luckily a local-ish machine shop agreed to make me some. Initial finish was a bit dull but some cutting compound and a dremel with a polishing mop soon sorted that. Stainless bolts from my local supplier for £1.20 for 8 finished the job.