EXTREMELY SMALL MINIPUMP BIKE: The BMP-101 SingleShot Mini Pump is 160mm long and and therefore easy to carry in your back pocket during a long bike ride. IMPRESSIVE PUMP VOLUME: The pump may be small, but its volume is still very powerful at 33cc per stroke. LIGHTWEIGHT: In addition to its size, this small mini pump is also very light so that you hardly feel it in your back pocket. TUBELESS FRIENDLY: The push-on pump head of the mini bike pump is easy to use and tubeless friendly DURABLE: The aluminum body and shaft provide optimal durability while maintaining a low weight for easy carrying