These hard-to-find screws are preferred for their non-slip design. They are packaged in a convenient storage box with separate compartments for each screw size. The kit includes tweezers and a thread size gauge, which also functions as a shortening jig for grinding screws to a shorter length. The Master Gunsmith Torx-style 6-lobe ring and base screw kit by pachmayr offers a cost-effective solution for replacing damaged or lost screws.