Product details:

Accessories Adjustable Follower Block, Letter Width, 4 per Carton Accessories let you surround yourself with productivity. This metal file follower block will fit in any letter-width vertical file cabinet to hold folders neatly in place. The spring-loaded mechanism can be secured in place in 5/8increments. Four per carton. Durable steel construction. Keeps files neatly in place. Spring-loaded mechanism locks in 5/8increments. Finish color is Interior Gray. This model can not be Cancelled once ordered.