ITEM NAME:Brass 1/4 inch PT male thread 6.5mm Air Hose Gas Hose Barb Coupling S2M5 Brass 1/4 inch PT male thread 6.5mm Air Hose Gas Hose Barb Coupling S2M5 12mm inner diameter , outer diameter 24mm, 6mm width deep groove ball bearings. Closed with 2 metal shields, shielding any side of the bearing from dust or other possible contaminants. Frequently used for electric motors, wheel bearings, agriculture, conveyors and much more. Product Name: Hose Suction Hose inner diameter : 6.5 mm / 0.26 Thread diameter 13mm Thread sizes: 1/4 Total size: 12.5 x 32mm / 0.49 Material: brass Color: gold Weight: 8g Package content: 1 x breath tube.1 x breath tube. Thread sizes: 1/4. Material: brass. Frequently used for electric motors, wheel bearings, agriculture, conveyors and much more.