... is used to connect the oil nozzle and oil hose, copper material, 3/4" and 1" 1. HS-1A Rotary ... Swivels, Used for connecting the nozzle and the hose, 360° swivel action. 2. HS-1B Unrotary Swivels Used for ... connecting the nozzle and the hose 3. NS-1 Swivels used for TD-20A Automatic Nozzle ...