Set of 2 optional Sit-to-Stand attachments that enable easier transfers, increase the function of the table for unique treatments and provide additional support. Attachments are exclusive to Tri W-G products. The Sit-to-Stand attachments each have a maximum static load of 500 lbs. The above the table height though is adjustable. This is an accessory for TWG9000.BM series tables only from Tri W-G. The purchase only includes the Sit-to-Stand items and not the table. Installation is easy and can be done on-site after purchase.