model name:- gp104l product size: diameter 27 mm ,125 mm product weight: 70 gm take the stress out of finding veins in your smallest patients (“infrared led” cold light source)it is optimized to find veins using traditional through the body trans illumination technique.trans illumination method can be used anywhere on the body. With the vein viewer, veins can be mapped to avoid valves or bifurcations and find the best place for safe access.the ingenious o- shaped design helps secure the vein, provides traction on the skin, facilitating easy needle insertion.