4pcs Diamond Knife Sharpener Sharpening Stone Honeycomb Grind Sharpener Kit Kitchen & Dining Simply connect your garden hose

Simply connect your garden hose to the mat's valve

The cold catalyst filter removes formaldehyde and bacteria

Laser wavelength: 523nm

1 x Water pump

4pcs Diamond Knife Sharpener Sharpening Stone Honeycomb Grind Sharpener Kit Kitchen & Dining Simply connect your garden hoseFeatures: Package Content: You will receive 4pcs diamond sharpening stone in different types of grit, including 400# 600# 1000# 1200#. The sufficient types of grits and quantities can meet your grinding needs from coarse to fine in your daily life or work. Premium Material: The sharpening stone is made of high quality diamond material, which makes it easy to grind and endure for a long time. It's designed with a non slippery pad on the back to protect