The #29 Kadee Magne-Matic Coupler features a very strong plastic isolated coupler, #634 Centering Spring, (same gear box as the NO.5 Coupler), insulated #232 Draft Gear Box and Lid with side and center screw holes for mounting and the (20-Series draft gear box) insulated #213 Universal Adaptor Plate. The #29 Coupler easily installs in existing Talgo-mounted draft gear boxes with supplied #212 Talgo Truck Adaptors or can be body mounted with supplied #232 draft gear box (NO.5 Draft Gear Box) with side and center screw holes for mounting or with the supplied #213 Universal Adaptor Plate (20-Series draft gear box).