Abstract: A pneumatic tool includes a housing of a cylinder, a rotor and at least a blade. The housing of the cylinder has an inner wall. The rotor is disposed inside the housing of the cylinder. The rotor has at least a slit. The blade is movably inserted into the slit. The blade includes a solid lubricant, at least an oil-bearing trough and a counterweight. The solid lubricant is disposed on a contacting surface near the inner wall. When the blade is flung out from the slit, the solid lubricant is against the inner wall. The oil-bearing trough is disposed on the contacting surface for storing oil to lubricate the contacting surface and the inner wall. The counterweight is disposed inside the blade near the inner wall for increasing a force to fling the blade out from the slit.