To provide a cheap and small blow tool with better maintainability by dispensing with the filling of a constant amount of a lubricant into its own blow mechanism to eliminate the necessity of charge operation in assembling, seal member arrangement for the leak prevention of the lubricant, and also periodic lubricant replacement for maintaining a lifetime and performance, in relation to a lubrication mechanism of the blow tool.

This blow tool is provided with a member composed of a self-lubricative material on each sliding part in its blow mechanism.