cafe racer,scramber hoop/loop 25mm tube 1.6 wall, 230mm outside width with 20 degree angle and inserts to fit cx cb gs and other hondas/bikes 
sorry about the price but these take me over a hour to make and i use 2 hoops (1 as a carrier for the light )
i was selling the light separate but i've included it and just added a £5 to the price 

i've fitted one of these myself the other day and used clear silicone as a lubricant to squeeze the light in and it was just the job, as well as acting as a lubricant it's also acts as a glue/retainer,( the sticky strip thats on the light is useless),it totally seals the whole thing and any excess can be easily removed when its dry ,, its really just the job and i recommend to every one fitting one 
thanks,,shaun