Surly Inner Tube, 26" x 3.0" -4.0", PV For Larry & Endomoroh Tires ! Surly Inner Tube, 26" x 3.0" -4.0", PV For Larry & Endomoroh Tires ! Butyl; for use with Surly Larry and Endomorph tires. Or any "FAT" 26" Tires Or any "FAT" 26" Tires