If you play your 78rpm records on a "wind-up" gramophone, it is important to change the needle after every play in order to preserve the life of your records. 

Steel gramophone needles are available in different "tones". Basically, the thicker the needle, the louder your gramophone will play. 
Steel gramophone needles, in packs of soft, medium, loud and extra loud tone. .

For general use use  MEDIUM tone.