Product Overview The Trailer Jack Dolly provides a "capture" for your trailer jack or trailer jack wheel. With a pair of Auto Dollies under each trailer wheel and one with the Trailer Jack Attachment under the jack, your trailer (and load) can now be moved in any direction (even sideways). Preserve precious floor space by storing it closer to the wall than you could hope to safely & conveniently get it by jockeying it around on your hitch! *Auto dolly sold separately Key Features Fits 12" standard and heavy-duty auto dollies size Ideal For Choose this product if you need: Adding functionality to compatible Merrick Auto Dollies Automotive shops and restoration projects Users matching the attachment to the correct dolly style Not Ideal For Not ideal if your dolly, vehicle, or mounting pattern does not match the compatible use described above. Product Details Review the shared product details first, then use the SKU options table to match the correct size, bundle, or configuration before selecting an option on this product page. Shared Product Details Brand Merrick Machine Product Type Auto Dolly Attachments and Accessories Model No. M998086 Size Fits 12" standard and heavy-duty auto dollies Available SKU Options Use this table to identify which SKU matches the size, capacity, or configuration you need. SKU Add Auto Dolly M998086 None M998086+M998117 12" x 16" Heavy Duty Flat Dolly M998086+M998116 12" x 16" Standard Duty Flat Dolly M998086+M998111 12" x 16" Standard Duty V-Groove Dolly M998086+M998114 12" x 16" Heavy Duty V-Groove Dolly Related Resources For help choosing add-ons for Merrick dollies, see our Merrick Auto Dolly attachment guide.Frequently Asked Questions What is this accessory used for? It adds a specific function to compatible Merrick Auto Dolly equipment. Check the product details and option selection to confirm compatibility before ordering. How do I choose the right SKU? Use the Available SKU Options table under Product Details to match the SKU to the correct size, bundle, or configuration. Is this product ready for every application? No. It should only be used when the listed capacity, dimensions, and compatibility match your load and work environment.