Five O-rings for Nespresso, 24374, 61701, 71881 (all same size)  Silicone material.

Photo shows a dime for size comparison.  

Located in NJ for fast shipping.  If you order by noon EST I have it out the same day, first class mail, otherwise next day.  I ship Saturdays too. I specialize in o-rings and repair kits for Ulka pumps.  Check out my feedback and all my happy o-ring customers.