Features:

  

• This product made of PVA polymer glue cotton, good filterability, harmless to human body.
• Mainly used for testing the water quality: if the filter cotton becomes yellow, means the water quality is not good; if the
  filter cotton keeps white, means the water quality is good.
• To a certain degree, it can filter suspension and impurities that hardly seen by naked-eye.
• High density.
• Can soften water pressure.
• Easy to install: Set it in the ordinary tap, or used as a simple filter.
• Suitable for a variety of ordinary faucets.

Specifications:

• Size:150mm*20mm*5mm
• Type:
  001:Corundum oil stone(200#)
  002:Green carbon oil stone(400#)
  003:Boron carbide oil stone(800#)
  004:Black onyx oil stone(1500#)
  005:Ruby oil stone(3000#)
  006:White agate oil stone(6000#)
  007:Diamond oil stone(8000#)
  008:Emerald oil stone(10000#)
  

Package Included:

• 1pcs / 8pcs Sharpening Stones