These are medium control rod clamps from Sullivan. These secure control rods in flying models. These are used to secure control rods to solid portions of model.
FEATURES: Spring steel construction, Black finish.
INCLUDES: Six control rod clamps, six 2-56 clamping screws
REQUIRES: Six #4 or 4-40 screws to attach to rib or bulkhead.
COMMENTS: Will fit Sullivan #503, 504, 505, 506, 511,519, 580 and 581 Gold-N-Rods as well as most other brands.