1.Ring knife: diameter 61.8mm high 20mm 

2.Top soil block (bulldozer): ¢58mm high 35mm 

3. Permeable stone: 79.1mm×10mm 

4. Basin container: stainless steel 

5. Guide ring: prevent expansion 

6. Piston head: made of plexiglass, the surface is evenly drilled with fine holes with a diameter of 1mm 

7. Deformation: Dial indicator range 0~10mm, accuracy 0.01mm