Complete diagram of original spare parts of Guide Bars, Guide bar R 45cm/18" 1,6mm/0.063" .325" Stihl. In case of purchase of spare parts, indicate in the notes field (in the final phase of the cart) the year of purchase of the machine to certify the spare parts correct originals. Guide bar R 45cm/18" 1,6mm/0.063" .325" Stihl in order to identify the correct original spare parts.