I heard there was an option for a jack and tire wrench available from Sunline, but it was pretty rare. I don't even know what it looks like. You can buy a T-handle tire wrench or something similar at Wal-mart, Tractor Supply, etc. However, I believe the Sunline lug nuts are all 13/16".
The handle that Hutch linked should work for your scissor jacks under the trailer, used for stabilizing.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR