BestEquipDolly Converter 13 Inch Width x 38 Inch Height Steel Converter Arms 250LBS Capacity Panel Dolly Handling Equippment

This worked perfectly once I made my own dolly with 2x6 boards. The dollys you can buy pre-made are too thin and not wide enough to make the rails sturdy. I do recommend this if you can use 2x6 boards.

Good for moving mattresses and flat panels. The only downside is we had to cut and install strips of wood to the bottom of the furniture dollies to fill the space and keep the handles upright.

Is meant to be attached to a 4 wheeler with screws and left on. Very narrow and not as heavy duty as I needed. It is not a replacement for industrial converter bars (aka: solo mattress carriers). No rubber coating. I returned it easy with no issues so 3 stars.

This Dolly converter was super easy to install on a 4 wheel furniture cart. Right after we installed it we used it to move a heavy mattress from one building to another. This made my job super easy and we plan to use this again very soon. Great for Moving!Dan Gales

I bought Tara to secure to wood dollies to aid in moving. They help when moving mattresses and big pictures.

The handle look sturdy, however, they did not suggest what dolly will fit it. Buy and Return

Works well. Make sure it fits your dolly. I have several different 4 wheel dollies and the side boards vary in thickness.