The Y-Tool comes in the perfect size to not take up much room but still . big enough to get enough torque into those bolts. Includes 4,5 and 6mm hex key sizes. Throw in your backpack and use when appropriate.
Material: Heat Treated Steel, rubber injected grip
Size: 4mm, 5mm and 6mm Hex
Features: Makes bolts tight, also loosens them.
Weight: If you’re worried about this, it’s time to hit the gym buddy