1-1/2" long
Use 8 levelers for the 1st leaf, and 4 on each additional leaf.

Extension leaves in tables are very handy when the family stops by for dinner.

When you want them to be perfectly level with the table top - these simple metal clips are the answer. They screw onto the bottom side of the leaves and the table top in pairs as shown and level the leaves and table top perfectly.

They are easy to install and can be added after the table is completely finished.