The elegant instrument is 14ct gold plated and has 260 ultra-fine needles of the highest grade surgical 316 stainless steel. The needles are 0.2 mm in length. The Environ Gold Roller has the advantage of being easy to clean and gold naturally suppresses bacterial growth. By using the roller, the microchannels are created and help serums penetrate deeper into the skin for a bigger and better results. You can use this devise every night with your Environ regimen or a few times per week.