This handheld, aluminum barrel air pump is big enough to pump up to 90psi and is small enough to mount and carry on your frame. Weighing just 4.6oz (130 grams), the Blue Mini Pump by Park Tool is 10.5" long and is Presta and Schrader valve compatible. It also comes with the mounting hardware needed to securely attach this air pump to water bottle bosses or under a bottle cage.Features: Aluminum barrel construction ensures long life and smooth operation Is 10.5" long, weighs 4.6oz, and can produce up to 90psi Includes mounting hardware to mount to water bottle bosses or under a bottle cage Presta and Schrader valve compatible Small, powerful, and reliable