Covington's 6", 8" and 10" aluminum heads are made from aluminum castings, machined true and balanced for smooth and vibration free operation. Attach a sanding or polishing disc to the face with "Stick-N-Peel" adhesive and it is ready to use.*Please specify left or right hand threads when ordering. Call for more information regarding special orders. Not all common thread sizes are listed here online, but are available for an additional $10.00. 
Simply select the options for the aluminum head that you wish to purchase. First select the size you would like, followed by the thread, then the direction you would like the thread to run. Total for that head will appear after you select all options. Note: Some of the options are unavailable for purchase, such as 6" heads with larger than 5/8" bore. This is because hub size prevents this from being able to be an option. When selecting a smooth bore, there is no need to select right or left in the thread directions option, instead select the set screw option.
