Shop For KR Strikeforce 3 Ball Roller Bags. Get the latest 3 ball roller bags released by KR Strikeforce. KR Strikeforce produces the Royal Flush Triple, Lane Rover Triple, Krush Triple, Cruiser Triple, hybrid X Triple, Royal Flush Slim Triple Tote, and the Krush Slim Triple Tote bowling ball bags. We have the perfect bag for everyone. The Royal Flush comes with a industry 1st 7 year Warranty. All other 2 Ball Rollers come with a 5 Year Warranty.