With C-Frame Corral Style Mother Cart, 50 x 50 in. Daughter carts are manually pushed into frame and secured with 2 frame-mounted flip down locks. Mother cart has extra weight in frame to provide secure, skid-free tracking when connected in trains. In addition to two 6 x 2 in. swivel wheels and two double 6 x 2 in. rigid polyurethane wheels, Mother Cart includes powder paint finish and self-stowing eyelet towbar with clevis and pin hitch.