TruWiks (TM) Wick Holder

These handy wick-centering devices are made of 100% recycled plastic and imported from Australia. 

Features: Ball-joint on the end allows the clip to be opened and closed on the wick, eliminating the struggle to insert wicks into a tiny groove while maintaining their position in the jar.  Plastic composition is resistant to heat, therefore reducing the likelihood of radiant heat leaving flaws in the tops of the candles. Can be used for traditional wicks, ribbon wicks and wooden wicks. Single or double-wick configuration.

Can be used with containers with diameters ranging from 45 cm up to around 115 cm. 
Be sure to watch the "How To" video provided by the TruWiks (TM) creator.