Lundberg Custom Supplies: https://www.lundberg-custom.com/ Instagram: https://www.instagram.com/lundbergcus… Facebook: https://www.facebook.com/lundbergcustom/ The new Soft Grip Tip Cartridges (SGTC) by RATIO. This is a high end needle cartridge with a new improved super soft silicone membrane (about 30% softer than the standard Ratio membrane) to ensure full protection against cross contamination between the cartridge and the machine. The Soft