The Super Adapters from Sunex allow users to change the size of their air tool with a simple attachment. Re-engineered to increase durability, these adapters are backed by an "unbreakable" lifetime guarantee. Sizes available include: 3/8" by 1/4" (No. 3303), 1/2" by 3/8" (No. 2303), 3/4" by 1/2" (No. 4305) and 1" by 3/4" (No. 5305).