Delta ring wrench/tool - Real Avid AR15 Easy Grip Handguard Removal Tool

Greetings:
I read many reviews covering these Delta Ring Tools made by various manufacturers. I’ve yet to read the review covering the “Perfect” tool.
Having received my Real Avid version today & immediately took it out of the box & proceeded to use it to attempt to remove an existing hand guard from one of my AR’s. The spring securing that two piece hand guard is very stiff. I’m guessing that due to my never performing this task before, I had to attempt the process multiple times to successfully remove the hand guard. The delta ring has definitive 90 degree ridges in its’ contour that can & will cut thru the protective rubberish covering on the tool rods. After several attempts to remove the initial hand guard & then several attempts to install the new hand guard, the sharp edges on the delta ring indeed did cut thru the rubber/plastic protective covering on the rods of the tool. I’m not aware of any other material that could be used to cover the rods that would not be susceptible to tearing/cutting on the edges of the delta ring. It’s just the nature of the beast. Next I will try wrapping the rods with a good quality electrical tape such as a 3M product.
The 3M tapes that come in the milky looking translucent plastic containers are very high quality tapes. But even that will not be a one time application that will last indefinitely. As far as the performance of the tool, it did what it is designed to do; collapse the delta ring.
The design of the hand guard is made to high tolerances & fit very tightly. As a result, it does require a bit of practice as well as patience to complete the task at hand. But this tool indeed does make it doable. The red plastic handles are an ergonomic plus to aid with the process & helps keep your grip hand from becoming prematurely fatigued.