If you do a search for GROOVE then you can get other results, like these:
Item # 30-400-3
CI V-Groove Wheel, 3" x 1-1/2"
Cast Iron V-Groove Wheel. 3" x 1-1/2", 500 lbs Capacity.
Price $8.19
Cast Iron V-Groove Wheel. 3" x 1-1/2", 500 lbs Capacity.
How much larger do you need?