Dura-Lon™ Plastic Coated Picture Wire. The plastic coating is specially formulated to adhere to Stainless Steel wire creating a wire that will neither stretch or separate. Dura-Lon™ plastic coated wire wraps faster and easier than any comparable brand in the industry today. We recommend using a larks head knot, and then wrap the wire back eight full rotations for the strongest hold. * Please note: There are many factors that can affect the maximum load rate such as hardware, attachment points, and how the wire itself is wrapped. For these reasons, do not exceed the recommended maximum picture weight listed.