The Easy Coupler allows you to change driveline couplers in around 1 minute in most situations. This design prevents contact with harmful chemicals and UV rays.  The two piece insert eliminates metal on metal contact for easy removal and replacement.  If a coupler is damaged in any way or if you need different driveline sizes, simply slide the old coupler inserts out and slide in the new ones.  No need to replace the casing- saving you time and money! Watch more videos at www.doublektech.net.