Ag/AgCl ( not cheap chrome coating ) coating for better signal picking up

It is manufacturer by a FDA registered factory to ensure quality and safety . 

ECG/EKG reusable suction cup electrodes , Pediatric size for child under 40Kg or 90Lbs 

The green one on picture is Pediatric size . You will get set of 6 pediatric suction ball , not the blue adult size

Bag of 6 
with connector for 3 or 4mm banana pin , or female snap on leads wire 

Recommended to use with electrodes gel