5 and 3.5 Micron Diamond Paste comes in syringes for clean and easy application to your strops. Each syringe is good for 8 to 9 applications and each application should function for 30 to 40 sharpening sessions. The 5/3.5 Micron Diamond Paste works well when combined with our Blank Leather Strops or Blank Balsa Strops.