TenPoint Arrow Retention Spring

The arrow retention spring functions to hold the arrow in the arrow grove against the barrel of the cocked crossbow. This enables the operator to hold the crossbow at different angles without the arrow falling off the barrel. All crossbows come with something that performs this function and the only reason you'd buy this part is if something happened to the one that came with your crossbow, such as the retention spring got bent by snagging on something. You want it to apply just the right amount of pressure on the arrow shaft and when installed properly this one does when using an arrow of the diameter recommended by the manufacturer. In short, it does its job and is an OEM part in case you bent or lost the one that came with your crossbow.