50pcs rings in Yellow colors Price for 50pcs Small Type YELLOW Color Dental Silicone Instrument Color code rings! Autoclave-able,Silicone code rings for dental instruments Fully autoclavable to 135ºC Medical grade silicone material Available colors: Blue, Light Blue, Green,Yellow, Red, Purple, Black and White Inner Diameter: 4mm Outer Diameter: 7mm Color bands are expandable from 4mm to 12mmHaodental