OEM Honda M8 Hex Bolts with the correct "8" head. Sold as each in the following size:
M8 x 16mm, M8 x 20mm, M8 x 25mm.
(M8 x 25 is used for the CT70 Hubs to Rims)
(M8 x 16 is used for the Z50 Hubs to Rims)
M8 Hex bolts use a 12mm wrench (just for reference).