Adj. Anti-Tippers w/Wheels(pr) (for 10959 Series) 1 Pr/Bx * Universal chrome * Unique spring-loaded flip-lock mechanism easily flips up and down for traversing curbs * Model 10957P features a universal spacing sleeve which can be added or removed to accomodate a secure fit with the 10954 and 10964 Series Wheelchairs * Model 10957Q is for use with the 10959 Series Wheelchairs