Mammoth Choppers has teamed up with Drucci Steel to produce a new line of custom oil tanks. The Single Sphere oil tank features an absolutely round 8” diameter, 1/8” mild steel wall construction, knurled/vented cap and the ability to hold 3.50 quarts. ¼” NPT fill bung and a ¼ NPT drain bung is located on the bottom of the single sphere. The whole tank is pressure blasted and smoothed to a 3M Scotchbrite finish. Made in the USA.