If needed we can drill a hole and install a valve stem on the back side for you. These rims are 8 lug with a 6" center hole and 8" lug pattern.
The rim offset is about 8" on the valve stem side with 5.25" backspacing, plus the tire sidewall increases the width by approximately 1/2. This 8-lug rim design fits most skid steers. Bobcat, Case, CAT, Daewoo, Gehl, John Deere, Mustang, New Holland, Scat Trak & Thomas made most of their machines with an 8-lug rim. The main difference is the offset does vary between the different manufacturers but most of the rims do interchange.
Narvon is located in southeastern PA (between Harrisburg & Philadelphia).