Piston rings for the Honda DIO 34 scooter, +0.25 mm oversize. Size: 39.00 + 0.25 mm. The rings seal the piston in the cylinder, maintaining compression and keeping oil out of the combustion chamber. Manufacturer: TATA.
Consider replacing them if compression drops, acceleration is sluggish, the exhaust is smoky, or oil consumption is high. The ring size must match the size of the piston and cylinder.
