these gadgets are usually very inexpensive and typically consist of a small rubber nozzle with a hose fitting on one end.
这些小玩意通常十分低廉,通常包含了一个小橡皮软管喷嘴装设一完。
one of the basic parts in hydraulic industry is high-pressure hydraulic hose fitting assembly. its quality directly affects the reliability of hydraulic system and its host machine.