The best of both worlds—protective impact-resistant railing that gives you easy access to machinery for repairs and maintenance. JARKE Steel Sentry Impact-Resistant Protective Railing has specially designed rails that bolt in place for strength and can be easily removed when necessary. Extremely strong components are constructed of 4" square tubular 7-gauge steel. Supported by 11x11", 1/2" thick foot plates with 7/8" mounting holes, posts should be bolted to the floor for stability. Ships unassembled. Made in USA.NOTE: Rails and posts are sold separately. Must order both rails and posts to build a complete safety guardrail.