Twin brothers Craig and Jamie Overton have committed their futures to Somerset by signing new contracts.
The 19-year-olds, who hail from North Devon, have graduated through the academy system at the County Ground.
Although their previous deals were due to expire shortly, the siblings have now signed on for another three seasons.
"It is an honour to have signed an extension with the club I have always supported and have always wanted to play for," Craig told the club's official website.
Jamie added: "Signing a new three-year deal with Somerset is the cherry on top in terms of what has already happened for me this season."
Both players have represented the England Lions in recent years.
