Anti-tippers (Extra Safety) for Feather Chair. The Anti-tippers are for the Featherweight Manual wheelchairs only. They connect at the lower rear frame and provide an additional safety measure for the manual wheelchairs. They are sold only as a pair (as one LH and one RH anti-tipper). They are compatible on both the Featherweight manual 13.5lb wheelchair and the heavy duty Featherweight extra wide manual wheelchair and come in two color choices to match the wheelchair frame color.