HS624, 50 EPI, K-Guard, black Addix The Schwalbe Smart Sam Active Line is a robust MTB tire for versatile use. With its 50 EPI casing, it offers a balanced combination of stability and comfort. The HS624 tread ensures reliable grip on forest trails and gravel and remains pleasantly smooth on firm surfaces. The Addix rubber compound improves durability and rolling performance. In addition, the integrated K-Guard protects against punctures during daily use. ETRTO 47-355 Main color black Application range MTB TPI / EPI 50 Type/kind Article Version wire bead tires Wheel size 18 "