Alligator V2B 50 Pack Inflate Through Valve Stem Cap "Gator" Auto RV Semi The REAL V2B Gator cap! Made in Germany! Tried and Proven Cap in use since the 50's Inflate, deflate and gauge your tires without taking the cap off! Huge time savings! Great for cars, RVs, Semis, boats, anything with a valve stem Tough all metal housing with durable self sealing O-ring. Pack of 50 caps! 10 qty packs also available.