Don't bother with finicky locking mechanisms or chucks that thread onto the valve. The SILCA Press-On Chuck is an extremely simply experience to push on, stay on, and press off.
• 242 Synthetic gasket for long life
• Threads into any Schrader attachment
• Easy press-on use
SILCA LIFETIME WARRANTY
The SILCA Lifetime Warranty covers products from manufacturing defects for the lifetime of the user. It further covers the function of all hard parts for 7 years from the date of purchase. Expected wear and tear is not covered. Learn more about warranties.
 We felt the need to re-imagine this most iconic of cycling tools as an heirloom-quality objet d'art. The utmost care has been taken to machine the part using mono-crystalline diamond tooling to get the perfect surface finish, while the final feel of the part benefits from an investigation into more than 20 different styles and depths of knurl so that it will feel just-so in your hands as it provides a lifetime of useful enjoyment.  This is truly a tool you will hand down to your children and them in turn onto theirs. 
