"EK Water Blocks EK-Quantum Torque Color Ring 10-Pack STC 12/16 - Torque fixing ring - Black - 1/4" -"
EK Water Blocks EK-Quantum Torque Color Ring 10-Pack STC 12/16. Product type: Torque fixing ring, Product colour: Black, Hex key sizes (imperial): 1/4". Country of origin: Slovenia