MAVIC RIM A 1025 650B"This high end rim in 650B is the quintessence of Mavic's know how in rim design. It features our most iconic and proven technologies, including, including ISM4D and UST. The rim bed shape makes it easy to mount any tyres, tubeless and tubetype. It's 25mm internal width is perfect for adventurous rider willing to use tyres up to 64mm 2. 5, and is also compatible with tyres as narrow as 28mm. UST tape and valve delivered separately."