RailFX Aluminum Rail Cable Kits RailFX Cable Rail Kits are pre-packed with everything you need for 1 run of cable rail. 1/8" Cable made from 316 Grade Stainless Steel in lengths from 5' to 70', along with the fittings for outside to outside aluminum post installation. You will need 10 Kits for 36" rail, & 12 Kits for 42" rail. RailFX Cable Rail Kits: Available in 5', 10', 15', 20', 25', 30', 40', 50', 60', & 70' Lengths For Outside to Outside Installation With RailFX 2-3/8" Aluminum Posts 1/8" Heavy Duty 316 Grade SS Cable Can Be Cut To Fit Includes 1 Invisiware Receiver, 1 Pull-Lock End Fitting, End Cap, & Washers Hardware Hidden Inside Post 10 Cable Kits Needed for 36" Rail 12 Cable Kits Needed for 42" Rail Minimum Cable Spacing: 3-3/16" On Center Made In The USA Cable Kit Instructions