Keep your i-Tip extensions in even longer with the Hair Shop Silicone-Lined Protubes. The silicone lining offers an unbeatable grip for no slipping. These copper beads remain lightweight in the hair, and have chip-resistant color to stay undetectable in the hair. With a 3.4 x 5 mm size, these are ideal for most hair types. Each case comes with 250 pieces - more than enough for a full head of hair.