Replacement parts for Rec-Mount are also available, but they cost about 2200 yen on Amazon. Items for sale: Replacement parts Double-sided tape. The double-sided tape is Scotch's super-strong tape, and one piece cut into a square of about 2.5cm is included. The recessed circular part on the back of the part is 2.5cm in diameter. Cut it into a circle and stick it on the back of the part. Wipe off any moisture or oil from the adhesive surface before applying. It takes one day for maximum adhesion to be achieved. You need to make a hole in the center of the double-sided tape so as not to block the hole of the main speaker, but to avoid scratching the cycle computer itself, make the hole before attaching it to the cycle computer. For road bikes such as S-WORKS, Specialized, SPECIALIZED, Cannondale, CANNONDALE, Canyon, CANYON, Trek, TREK, Merida, MERIDA, Giant, GIANT, Bianchi, BIANCHI, Pinarello, PINARELLO, Colnago, COLNAGO, etc. Due to the overseas product, there may be fine scratches, scratches, burrs, etc. in the manufacturing process that do not meet the quality standards. No instruction manual is included. Simple packaging without using cushioning materials such as bubble wrap, and will be shipped by regular mail.