Hi Mike, Welcome to the Forum!
We have the Reese 16K slider with the square rail. Works great fine for us. I just have to shoot some lube on it every once in a while because the car wash will clean the grease out and it gets sticky rollers. As far as safe? Not sure what you mean but I haven't killed anybody and I still have both my arms and legs
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Just a note - I assume you already have a hitch- If its the Reese, you can buy just the slider module, you don't have to replace the whole hitch. Doesn't matter if you have the Pro or the Signature.
Hybrid Mode
