The Bicycle Pump Adapter Valve is a replacement head designed to fit any track pump with a head. It comes with a versatile dual valve design, allowing you to easily inflate Presta or Schrader tubes. You can easily attach the new head to your hose by unscrewing and sliding it on. Alternatively, you can cut the end of the hose and secure it with a jubilee clip. Made of plastic, this adapter valve is lightweight and durable. It measures approximately 5.5*4cm and comes in the color shown in the picture. With this Bicycle Pump Adapter Valve, you can conveniently inflate your bike tires using a track pump. Whether you have Presta or Schrader tubes, this adapter valve has got you covered. It is easy to install and compatible with most track pumps. The plastic construction ensures its longevity and the lightweight design makes it easy to carry with you on your rides. Upgrade your bike pump with this versatile and reliable adapter valve. Package includes: 1 x Pump adapter valve Key Features: Versatile dual valve design Compatible with any track pump Easy to install Made of durable plastic Lightweight and portable