Props Will Collier and Kyle Sinckler have become the latest players to sign extended contracts with Harlequins.
Collier, 23, who last year was named in the England Saxons squad to face Ireland and Scotland but had to withdraw through injury, has committed until 2018.
Since making his senior debut for Quins in January 2011, he has gone to make 67 appearances for the club.
Wandsworth-born Sinckler, 21, started for England against the Barbarians last summer and also featured on the tour of New Zealand. His new Quins deal runs until the end of the 2016-17 season.
Harlequins head coach John Kingston said: “They are both outstandingly talented young tight head props who I have absolutely no doubt can go on to achieve the highest honours in the English game.
“They have progressed hugely over recent seasons and I look forward to seeing the continued healthy competition between them for the number three shirt over the coming years.”
Earlier this week, back-row Luke Wallace and centre Matt Hopper both signed up until 2017, while veteran Nick Easter has said he has an agreement in place on new two-year deal.
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This post was last modified on 15/01/2015