This is a BIKEfun bottle cage adapter for Brompton bikes, made in Taiwan. By installing this adapter, you can attach your favorite bottle cage (drink holder) to the inside of the handlebars. - Brand: BIKEfun - Color: Black - Retail Price: ¥11,000 I purchased this approximately 6 years ago from the famous Brompton specialty store, Cycle House Shibuya (currently still selling for ¥11,000). It has been stored indoors and used infrequently, so it's in good condition. Except for the handlebar post fixing part, it's made of metal and has a very beautiful finish. Being a Brompton-specific product, it secures firmly, can be removed without tools, and is designed not to interfere when folded (see photo 4). As a bonus, I'll include a used Minoura aluminum lightweight bottle cage (new, around ¥1000). It's slightly warped but still usable. Please consider it as a bonus item only. Thank you for reading to the end. #BROMPTON #Brompton #CycleHouseShibuya #BottleCageAdapter #BottleCageAdapter #DrinkHolder #DrinkHolder