These wicks are ideally designed to accommodate all standard sized oil cups so you will never have to worry about any malfunctions while you're setting things up for your ceremonial event. Supremely convenient so you'll always be prepared for any ceremonial event. They offer the best results by providing just the right amount of burn time without them lingering for too long or being too short. Use any oil you prefer and get to burning with ensured safety and reliability. With Castel Royale, you're choosing high quality products backed up with years of expertise. Choose our wicks so your candles light up with ensured effectiveness and safety.