Feature: The product is made of high-quality wood raw materials, non-toxic, odorless and safe to use. The unique structure of wood filter can effectively reduce tar and moisture produced by tobacco and protect health. Use and replacement are very simple, just take the pipe apart and put the wooden filter core in. Wood filter core has a fluffy structure with many tiny holes which can absorb tar. The size is 6mm, suitable for most pipe use. Specification: Material: Wood Size: 6mm Package list: 1 * Balsa Filters(Bag) Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. 1The product is made of high-quality wood raw materials, non-toxic, odorless and safe to use. 2The unique structure of wood filter can effectively reduce tar and moisture produced by tobacco and protect health. 3Use and replacement are very simple, just take the pipe apart and put the wooden filter core in. 4Wood filter core has a fluffy structure with many tiny holes which can absorb tar. 5The size is 6mm, suitable for most pipe use.