The MT 4 mount is made as a support for the MT 1 mount, it's designed for the 1 1/4" x 1 1/4" receiver. This mount is also 304 stainless steel. The mount comes with an installed anti-rattle kit. Designed for use with the M100, M200, M300 & M400. Not designed for use with the M40, M75, LT-HP, LT-II or BTA.
