The Union Expedition Split Disk incorporates a unique design to help bring the two halves of the splitbaord together under your feet. It also provides a natural board flex and ride feel. 

Includes: 

Adapter Split Plates x 4
Split Disk x 4
Washers x 4
Mounting Hardware x 8 (M6 X 1 X 18.5)
Adapter Screws x 8 (M6 X 1 X 10)

Compatibility:  

Explorer
Expedition 2.0
Expedition 1.0