It not only provides a trailer ball platform for towing a trailer but also has an extra receiver tube to accept the shank of a bike rack
The RockerBall fits onto a variety of standard ball mounts -- virtually any ball mount with a 3-inch wide trailer ball tongue and 1-1/4-inch diameter ball hole
Fill-Rite Spin On Replacement Filter 10 Micron 8-25GPM Model F1810HM0
It requires the adjustable tri-ball mount replacement tube #45802 and the three 5/8" diameter pins and clips included with the complete tri-ball assembly
CURT is the obvious choice
CURT 48-Inch Trailer Safety Chain with 17/32-In S-Hooks, 7,000 lbs Break Strength Model 80301 Dakota It not only provides aCURT 48 Inch Trailer Safety Chain with 17 32 In S Hooks, 7,000 lbs Break Strength Model 80301 No matter how far you are planning to drive down the street or across the state using safety chains when you tow is smart, safe and required by law. Without safety chains attached, there is a serious risk of danger if your trailer becomes uncoupled from your trailer hitch. Play it safe with safety chains, and play it even safer with safety chains from CURT.