100x 4mm Silicone-Lined Micro Rings. 4mm Silicone Lined Micro Rings/Beads. The micro-beads are suitable for the application of 0.5g stick-tip hair extensions (i-tip) and also micro ring weft fittings. The centre of the micro-ring is lined with silicone which helps prevent damage to your client’s natural hair and also provide a strong grip. Very popular technique as its safe as no adhesives are used. The micro rings are manufactured from lightweight aluminum material which lay flat on your scalp to reduce visibility. Available in bottles of 100pcs (approx) Micro Bead Colour: Burgundy.