Hexagon Bolt Rounded Head
 
Bolt with a round head, M6 or M8 in chrome only:
The reference number is 01204-ZZXXY.
ZZ is the thread size, 06 or 08
XX is the length under the head in millimeter
Y is the plating, only 7 for chrome in this serie.
 
You will receive each bolt in a separate sealed plastic bag. OEM stuff is always a safe choice for quality.