Field of application: Off-road. Tire size: 20" x 1.75" (50.80 x 4.45 cm) (outer diameter x width/height in inches), ETRTO standard: 47-406 (tire width - outer diameter of the rim in mm). Suitable for tires: 20" x 1.5" to 2.125" (50.80 x 3.81 to 5.40 cm) (outer diameter x width/height in inches), ETRTO standard: 40 to 54-406 (tire width - outer diameter of the rim in mm). Compatible with rim widths: 17 to 27 mm (indicated on the rim, example: 406-17C = 17 mm). Features a protective insert in the tire for increased puncture safety, protecting against glass shards, nails, thorns, etc. Application examples: replaces the outdated or damaged tire on the bicycle.