Different Type Hair Extensions Tools Glue Granule/ ... Type, Multi-used3. Micro RingsSilicone Micro Rings, Screw Micro Rings, Copper Long Ring, Shrinkable Ring4. Hair ConnectorsA Type (Single & Double Temp), A Type with Adjustable ... Device, B type (Double Temp), C type (Double & Adjugable), D Type (Adjugable), F Type, Ultrasonic. 5 ...