International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. The thread screws are designed for timber/wood post. Wood Post Cable Fittings Steel DN Mate T316 Stainless Steel Right&Left Handed Thread Swage Lag Screws For Wood Post Of 1/8" Cable Railing Kit, Deck Railing Hardware/Stair Deck Railing,DIY Wood Baluster Kit, 50 Pairs 100 Packs Dn Mate Post Caps The length of cable should be 1-1/2 inch shorter than the distance of the two posts; Step 2 Connect the cable to the lag screws, one end with left hand thread and the other end with right hand thread; Step 3 Screw the lag screws into the pilot holes in the post which have been drilled by the drill bit to adjust and tighten the cable. Buy Steel DN Mate T316 Stainless Steel Right&Left Handed Thread Swage Lag Screws for Wood Post of 1/8" Cable Railing Kit, 6 Pack Deck Railing Hardware/Stair Deck Railing, DIY Wood Baluster Kit DM03 at Length of cable should be 1-1/2 shorter than wood surface distanceas shown in pic. This deck railing hardware fit 1/8 OD cable of railing system. And this cable railing wont be easily unfixed or destroyeded. Products without Left & right will bring you hassle and might damage the cable. Package includes: left handed thread lag screw:20 Pcs; right handed thread lag screw:20 Pcs; wood drill bit:2 Pcs. Steel DN Mate 40 PCS Deck Railing Bracket Connectors, 500ft Black Wire Rope, 60 Pack Black T316 Installation steps: Step 1 Measure the distance for the 2 wood post surface twice, and cut once. With an easy-to-use design that tightens directly into wood without extra tensioners, this kit includes 20 pairs of lag screws, a spanner multi-function tool, and a drill bit, making it perfect for DIY deck, balcony, and staircase projects The lag screws could be drilled into wood to adjust the tightness without extra turnbuckle or tensioner.