Sword Specialization Rogue

From wow.incgamers.com

Talent: Sword Specialization Rogue
Effect: Gives you a chance to get an extra attack on the same target after dealing damage with your Sword.
Statistics: Rank 1 = 1%, Rank 2 = 2%, Rank 3 = 3%, Rank 4 = 4%, Rank 5 = 5%.