Bought for my motorcycle tool kit. Robust aluminum case with storage space for all bits. It's probably for life. The cork loading system is easy to learn and everything you need to get the job done is included except air. Corks are very sticky, be careful not to open them before use. It would only be more convenient to take a small knife with you to cut off the excess length of rubber after caulking. I cut a thin rectangle of plastic and sharpened one side and then put additional plugs into the handle. Maybe that's not a good price considering the cost of production. But this tool is virtually indestructible and will happily sit in your toolbox until you need it. I hope you never use it. But when you do, it will probably feel like the best $25 you've ever spent.