RC Boat Water cooling Silicone Tubing 3 Feet Blackjack 6mm X 4mm 3 Feet 3 Feet Silicone Tube Line 6mmX4mm 3 Feet nitro fuel or RC Boat Tubing Size Medium 6mm OD x 4mm ID = .236 inch OD x .157 inch ID pre-cut flexible silicone tubing, length : 3 Ft  For RC Boat Water Cooling or nitro fuel line  THIS IS MEDIUM SIZE

• 【Eco-friendly Material】 High quality common grade silicone, lightweight UV resistant, does not deteriorate outdoors. Extremely durable.
• 【High Temp resistance】 High temperature silicone tubing. Provides excellent resistance to chemicals, solvents, alkalis, and acids. Smooth inner surface for easy flow and easy cleaning. BPA Free and non-toxic.
• 【common Grade silicone】 Suitable for general low pressure industrial applications for the conveyance of chemicals, liquids, gases, solids of suitable granular size, such as factory airline tubing automation machinery and pneumatic lines.
• 【Widely Applications】 Used for rc boats nitro rc cars aquarium air tubing, pumps, siphon, drain valve connections, filters. Great for fluid handling, water pump transfer, peristaltic pumps, siphoning, draining and water/oil change. We also have Small 3mm X 5mm = 118 inch ID X .196 inches OD  and  Large 4.5mm ID X 7MM OD = .177 inch ID X .275 inch OD  in our other listing