... secure locking mechanismSolid steel construction, nylon rope; no assembly requiredIncludes rack, pulley system, mounting system, hardware, rope3.8 pounds; ... necessary for installation are a Phillips head screwdriver, a drill with a 1/8" bit, a tape measure, and a stud finder (for ... products:YongKang EMJ Industrial & Trade CO.,LTD is a professional manufacturer of Ladder. Our ladder products as follow ...