PRO-Line, Wire, 30 TPI, Black / Reflex For e-bikes up to 25 km/h, the PRO-Line combines two puncture protection materials in an ideal way, offering protection against damage and flat tires. The rubber has strong rebound properties that repel sharp objects and prevent penetration. The reinforced casing (30 TPI) ensures better balance and stabilizes the extra-thick protective belt. 3 mm puncture protection insert, Protection Level 5 Type Article Version Wired tire E-bike type ready ETRTO 37-622 Features Reflex Area of use City/Trekking Main color black Wheel size 28 " TPI / EPI 30