W53 1/25  20" 5 Hole 5 Lug Dually Set.  Wheels are .80"(20") x .33"(8.25"). Tires are 1.36"(34") tall. 

Optional tire set... 8.25 x 20 x 40 (1.60") tall for 1.5+ ton trucks.

Optional sets include 6 wheels & tires or 10 wheels & tires.

Set #1 6 wheels w/34" tires.  $25

Set #2 6 wheels w/40" tires.  $28

Set #3  10 wheels w/34" tires.  $40

Set #4  10 wheels w/40" tires.  $44

Set comes with wheels, drum/hub style wheel back and tires. Backs have a 0.63" hole for metal axles or hole can be used as a pilot for plastic axles.