Crafted for hobby greenhouse owners and small-farm growers who run hoop houses, low tunnels, and high tunnels, this 40-pack of 6.56 ft. wiggle wire and aluminum lock channel adds up to over 260 linear feet of total lock capacity in one shipment, enough to wrap a full-size single-bay hobby greenhouse from corner to corner. The wiggle wire is PVC-coated spring steel, which gives it bite to hold film firmly while the coating keeps sharp metal away from greenhouse poly so the cover doesn't tear along the seam. Each lock channel is extruded aluminum, light enough to lift up onto purlins by hand and rigid enough to hold against wind and snow load through the growing season. The system works with 6 mil greenhouse poly film, knitted shade cloth, insect netting, and ground cover, so a single bulk kit supports multiple growing-season setups without sourcing different hardware. Press the wire into the channel by hand to lock a cover, and lift it out in seconds when seasonal swaps mean changing from clear film to shade cloth. A practical pick for backyard greenhouse enthusiasts, market gardeners, and small commercial growers running multiple tunnels.