Pencil sharpener pencil in position, although they then sharpen them to the usual conical point as for a round pencil, abandoning some distinctive aspects of the carpenter's pencil. Sharpeners with a single blade for use on wax crayons are available, and sometimes included in boxes of crayons. These often have plastic blades, which are adequate for the soft wax. Mechanical pencils dispense the graphite lead progressively during use and thus do not require sharpening; such pencils are sometimes called "self-sharpening". A type of mechanical pencil has a rotating gear mechanism which rotates the lead slightly every time the lead is lifted off
2–0 lead is the worst lead then scores to make it 2-1, the leading team can panic and concede further, resulting in a draw, or even a win for the other team. In contrast, a team which is leading 1-0 will tend to concentrate and play with intensity to protect or extend their narrow lead, whilst teams leading by three or more goals have a sufficiently large buffer that comebacks are unlikely. The cliché may be invoked by coaches to encourage their players to maintain effort levels after obtaining a two-goal lead. It can also be used in broadcasting, such as by a commentator or studio