The Mini K-Pump is shorter and lighter than the K-100 Ideal for kickboats and other inflatables. Comes with lube, adaptors, for other fittings It puts out the same air pressure as the 100 you just pump faster. I like it because it is shorter and easier to pack and carry. IT also has a secret storage space. Just twist the cap of the pump counter clock wise to remove by holding the plunger tube in your other hand. it will hold keys money band aids and several other survival aids. It also comes in the K100 and the K 200, they will hold even more because the plunger shaft is longer.