Daruma Bolt made by Nitto. When you attach a rack or carrier, this is going to be used for fixing a connection rod and carrier. *Available as one set including a hole bolt, fixed ring, washer, and nut. If you need both sides, 2 sets will be required. Specifications - Hole diameter: 7mm Screw - Thread size : M6 x 10mm - Hole Size: 7mm - Bolt Size: M6 x 10mm