These hand swage tensioners can be used on all types of posts, from 2x2"s to 4x4", wood or PVC, metal on deck railing. Overall length is 6", thread length is 4",hole to drill is 1/4",The pilot hole size of deck railing hardware is 1/8" and fits 1/8 inch OD cable of railing system.

HIGH-QUALITY-T316 stainless steel lag screw threaded swage stud fittings for 1/8 inch wire rope cable into posts, super strong resistance to rust, water and corrosion. Excellent for both outdoor and indoor cable railing applications.

The stud end fitting could be use on one end or both ends of your strands for maximum tensioning ability adjusted to tighten the wire rope. So you don't need to wast e money on turnbuckle or tensioner. You can use 30 degrees angled beveled washer to work with these two terminal for stair railing.