Compatible models: PLANTRONICS M70, M90, Explorer 500, and other Bluetooth earphones. Please check the size before purchasing. Contents: Ear hooks x 5; Size: 0.2 inch (6 mm) (compatible with 6.5 - 7 mm) headphone pedestals, and when it doesnt fit, you can heat it up with a blow dryer. *Earphones are not included. Material: Body: Silicone, Hook: PC. Color: Transparent