They can be used indoor or outdoor wood & metal post,decking railing,stairs railing handrails The hand swage threaded stud tension and angle beveled washer are in the post to keep deck or stair cable railing system pretty.The threaded terminal tensions your cable railing with only a few turns of a hex nut.Perfect for wood/ steel or aluminum post These deck railing hardware require a special hand crimper tool. Standard crimper tools typically not put a sufficient crimp on these steel fittings, which could result in cable loosening and slipping out You can DIY to install a cable railing system.The stud end could be adjusted to tighten the wire rope. So you don't need to wast money on turnbuckle or tensioner.These swage studs and angle beveled washers are fit for 1/8 inch wire roep cable,they are designed for decades using Name:Decking Hardware colour:Silver material:316 Stainless Steel Package Contents: 20x straight pole connector (10cm) 20x oblique washer 1x drill bit (6.5mm) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.