Our Acrylic cover with 15 holes on top and 15 offset holes on bottom - allows you to quickly oil all of the needles- without removing the cover. remove the original cover and replace with our acrylic cover (2 screws only) Comes in Clear Acrylic or Smoke Grey Acrylic.You can even personalize the cover with your name or send us your Simple business logo and we can engrave it into the acrylic cover (as seen in pictures), for an additional fee