The .25 replacement heads for your vibrating roller come 2 per box. Each micro needle roller head has it's own cover and is sterilized,

Features

• 540 Needles (50 needles x 9 disks)
• 2mm diameter
• Special designed disk shaped needle
• Made by Genosys, South Korea

Benefits:

• Shorter recovery, less erythema or redness
• No glue, safer to use
• No needle drop out while needling
• Less painful than other roller devices
• Creates more micro channels. Devise with 192 needles require almost 3 rolls to achieve the same number of micro channels and 1 roll with the Genosys roller.
• Longer life because of reduce number of times to roll to create micro channels.