VW 1600 Based 12 Volt Type 1 And 2 Generator or Alternator Pulley, Zinc, Chrome or Billet Aluminum Polished, Black, Red or Blue. Choose from Zinc, chrome or polished aluminum 2 piece pulleys or billet aluminum 1 piece front only in polished, black, red or blue. The 2 piece polished assembly has the chrome steel back half. Always use at least 10 shims, whether there are 3 in between the pulley halves and 7 on the outside between the pulley and the nut or 7 in between the pulley halves and 3 on the outside between the pulley and the nut etc. Shims sold in sets of 10 and the nut with spacer are sold together as 2 pieces.