These are the great value shimano altus m370 9 speed sti levers that give you a crisp gear shift on your mountain bike it is an individual pod design that allows you to use these shifters with any brake lever you choice with a low friction design that these shifters have gives you light and responsive short stroke action that reduces shifting effort they have an easy to read optical gear display and a barrel adjust for fine tuning your gears and brakes they are v brake compatible and come co