This is a 10 X 3″ (260X85) foam filled knobby tire. Foam filled tires are Primo pneumatic tires filled with urethane foam, so they are a tire inside of a tire. These are made for 2 piece wheels only, they are flat free. The bead to bead width is 2.75″. Maximum rider weight is 250 lbs. Please watch our videos to make sure this is what you needMaximum rider weight is 250 lbs. Sold as each.Compatibility:Dalton Primechair Mid-Wheel Drive, Dalton Primechair Rear-Wheel Drive, Drive Image GT (2800GT)Invacare Pronto M41, Invacare Pronto M50, Invacare Pronto M51, Invacare Pronto M61, Invacare Pronto M71 Jr., Invacare Pronto M71Jazzy 1113 ATS, Jazzy 610, Jazzy Select 6 Ultra, Jazzy Select GT, Jet 10 Ultra, Jet 3, Jet 3 Ultra, Jet 7, Pride Laser (SPSC300 / SPSC340), Pride Legend (SC300 / SC340), Pride Legend, (SC3000 / SC3400), Pride Maxima (SC900 / SC940), Pride Shuttle (SC100 / SC140), Pride Victory 3 (SC160 / SC1600) & Victory 4 (SC170 / SC1700), Pride Vista (SC166)Quickie Aspire, Quickie Freestyle, Quickie P-200, Quickie P-210Shoprider 6Runner 10, Shoprider HD (888WNLB), Shoprider Jetstream M (888WAM), Shoprider Sovereign (ES4), Shoprider Streamer, Shoprider Sunrunner 3 & 4California Proposition 65 Warning⚠ WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov