This is a complete set of spare retention hardware for your Ready Tactical holster. Kit includes one set each - Colorado nut, rubber spacer, and tension screw. Price is $4.50 shipped.
Be sure to put a drop of blue Loctite on the tension screw to prevent it from working loose and getting lost.
Note: Older model holsters used a silver tension screw and black plastic cover cap. All holsters now use a black retention screw and no cover cap. The plastic cover caps had a tendency to break so they have been eliminated.