PREMIUM Sheets are made of open coat aluminum oxide with a top coating tha reduces loading. Suitable for wood, metal, plastic & fibreglass. 
 
WET-DRY Sheets are made of closed coat silicon carbide. Suitable for polishing and sharpening.
 
HOOK & LOOP Sheets are available in the same paper as our Premium Sheets up to 800 grit. From 1000 to 3000 grit they are made of the same material as our wet-dry sheets.
 
PSA STICK-ON sheets are also made of the same material as our Premium Sheets.
 
EMERY sheets are open coat aluminum oxide suitable for wood or metal. 
 
Yes! we also sell in bulk - call for pricing!