Rubber Sealant is use for the side of car doors column A/B,it can effectively keeps out the wind, prevents the water leakage and lower the noise outside the car. | Recommended for re-sealing headlights after a retrofit or for installation between the glass and metal/llastic areas of automotive headlights/windscreen.It will remain permanently sealing and waterproofing. | Maretial:Synthetic Butyl Rubber.Waterproof. | Length: Approx. 4m 13ft. (enough for re-sealing about two - four headlight assemblies.) | Color:Balck