Device with external thread

摘要

"The device with external thread.Which is obtained from plastic material or metallic bar or injected or extruded in the form of a bolt (1) with a hexagon socket head (2),To be getting screwed radially into a support metallic or plastic (3), being provided with a central hole (4) calibrated to the full extent,With the purpose of restraining interference a rigid rod (5) to overthrow the coffee beans in the foot.