Finger Rollers have a rolling design face that is 0.8 cm (8 mm) across. The Finger Rollers are beautifully carved, have unique designs, release well, and have a smooth carved texture. Roll the FR roller across the clay with your thump and pointer finger to create a continuous pattern. Finger Rollers are made from wood and finished with tung oil to ensure durability for many years of use. All MKM rollers are easily cleaned with water and a soft toothbrush.