What is it called? Sort of like a finger cot.?

Question

it is this thing you put on your finger, it is rubber, and it has grooves on it. you use it when you are reading a book and you turn the pages. it grips the page for you for easy turning. i need to know the name of it. thank you for all your help.

Answer 1

You are describing a "rubber fingertip"  The ones made by Swingline are the ones we think of most often, but other companies make them.