Leinster have today announces details of 18 contract extensions and two new signings.
Isa Nacewa has signed a one-year extension to his deal until the end of the 2013/14 season.
Ireland international Kevin McLaughlin has signed a three-year deal while there are two-year extensions for fellow internationals Isaac Boss, Gordon D'Arcy, Eoin Reddan and Rhys Ruddock.
With a number of former Leinster Academy products such as Andrew Conway, David Kearney and Ian Madigan each agreeing two-year extensions, they will join forward duo Leo Auva'a and Aaron Dundon who have each come up through the AIL ranks with Old Belvedere and Seapoint/Clontarf, respectively, in recent years.
Club captain Leo Cullen, Fionn Carr, John Cooney, Brendan Macken and Springbok prop Heinke van der Merwe have all agreed one-year deals, while Mark Flanagan and Tom Sexton have signed one-year development contracts.
In addition, the province has announced two-year deals with two Irish qualified forwards who will link up with the province this summer.
Tight-head prop Michael Bent, 25, has signed a deal from Super 15 franchise the Hurricanes. Second row Tom Denton, 24, has signed from Leeds Carnegie.
"By swiftly concluding these deals, it enables us to plan ahead and I would like to pay tribute to all those who have assisted in the process," Leinster coach Joe Schmidt said.
"The process of recruitment can be quite drawn out, but we are delighted to announce these new extensions as well as welcoming Michael and Tom, who are two highly rated forwards who will add to the competitiveness in our pack over the coming seasons.
"There is a welcome mix of home-grown youth and experienced players amongst this batch of renewals, while we are delighted to announce extensions for Isa (Nacewa) and Heinke (van der Merwe) who have both contributed a significant amount on and off the field of play since their arrival.
"Each of the players have expressed a real enthusiasm to be part of a competitive Leinster squad and it is testament to the hard work of the staff and players - allied with the backing of our growing band of supporters - that has helped make the environment here such a very positive one."
Leinster season ticket sales for the 2012/13 season have passed the 11,000 mark and are still available from www.leinsterrugby.ie.
Leo Auva'a - two years
Isaac Boss - two years
Fionn Carr - one year
Andrew Conway - two years
John Cooney - one year
Leo Cullen - one year
Gordon D'Arcy - two years
Aaron Dundon - two years
Mark Flanagan - one year (development)
David Kearney - two years
Brendan Macken - one year
Ian Madigan - two years
Kevin McLaughlin - three years
Isa Nacewa - one year extension
Eoin Reddan - two years
Rhys Ruddock - two years
Thomas Sexton - one year (development)
Heinke van der Merwe - one year
Michael Bent - two years
Tom Denton - two years