The NOTCH Portawrap is a lightweight, compact rope friction device designed for lowering heavy wood in a controlled manner. Designed by arborists Scott Prophett and Norm Hall in the early 90s, the Portawrap has proven to be highly dependable lowering tool. The RUST-PROOF stainless-steel Portawrap will stand up to the worst heat, salt and humidity that a coastal company can throw at it. The main tube on the SherrillTree Portawrap is seamless, maximising its strength-to-weight ratio. Seamless tubing is ideal for more stressful applications requiring higher quality, increased mechanical properties, uniformity and strength. SherrillTree has all edges on the main tube and solid posts chamfered to eliminate any sharp edges. The Portawrap features a tree-protecting cap to help prevent gouging and disfiguration of the tree. If you want BEST rope friction device on the market, get a Portawrap. "Take it from me, Scott Prophett, this is the Real Deal".