"Ner Hadar" is an easy way to prepare your menorah for lighting with no muss and no fuss. The plastic vials, which are fire proof) are pre-filled with a combination of 90% olive oil and 10% paraffin oil wax. Wicks are guaranteed to burn for at least 3 hours and you don't need to worry about the flames burning out. Each box contains 44 vials which is enough for the entire holiday. The candles are under the strict supervision of Beth Din Tzedek Manchester.