This upgrade kit is for the HQ Adjustable Table and the QuilTable Table for the HQ Avanté. The length is designed to fill the entire QuilTable and the same length on the Adjustable Table. The kit includes two table-top pieces with 8-wheel track supports that are each about 5 feet long. It is designed to be about 10 feet long and not shorter or longer. We created a size that was most usable and flexible for both tables and the majority of users.