1. Flexible and easy to use.Perfect match with the car 2. and Nice qulity, to use. 3. Built to quality control standards.Not easy to damage, long service life 4. Stable performance, high reliability.a perfect replacement for your old 5. Made of high quality material, for use. Type:Chrome Single Groove Alternator Fan Pulley Fitment Type:Direct Install Condition:100% Placement on Vehicle:Engine Chrome Single Groove Alternator Fan And Pulley Small Block for 283 327 350 383 400 Part Number:MCC561SBC Steel Triple Plated Copper / Nickel / Chrome For Small Block for Engines 1957 - With Either Long Or Short Water Pump Alternator Fan and Pulley Is Made From .050 Thick Steel Chrome Alternator Pulley Has A Diameter Of 2 3/4 Inches Chrome Fan Has A Diameter Of 5 1/8 Inches Can Be Used On Internal and External Voltage Regulator Alternators As Well As One Wire Alts Colour:Silver Material:Metal Package Contents: 1 * Chrome Single Groove Alternator Pulley Impeller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.