Size:2.1mmx120mm Needle Handle • Transparent material make doctors to see the needle indicator clearly. • The thread on handle could offer the friction to penetrate the veress needle easily. • Ergonomic design to make hands more comfortable. Needle Tip • Blunt tip with spring loaded mechanism to protect patients from damage. Air Valve • Suitable diameter of air channel could charge Co2 rapidly. • One-way air valve switch to avoid misoperation. Needle Indicator • It could indicate the needle position in penetration • Red color is easy to be observed.