New READY TO SHIP MTB Hubs Extralite ExtraBolt 18 Superlight CenterLock Locking ring 5.4g EXTBOL2512171 €29.00 SuperLight Centerlock Locking ring. Hyper accurate AL 7075 T6 cnc. Laser etched graphics. Compatible with Shimano TL-UN70 BB tool or Compass tightening wrench (3mm pins). Thread lenght: 5.3mm. Color: black or silver. Weight: 5.4g ADD TO CART