SKS Chainboard chain guard for 46-48 tooth chainringsbr /br /Color: silver / blackbr /Bracket material: aluminiumbr /Guard material: plasticbr /Total height: 22 cmbr /Crank hole diameter: 15 cmbr /br /- Innovative chain guard system. The combination of high-quality plastic elements with SKS Chromoplastics technology offers convincing product advantages: extremely lightweight and high stability.br /- Chain guard for gear hubs.br /- Suitable for chainrings with a diameter of 175 mm.br /- Suitable for chainrings with up to 44 teeth.