The Fabtech FTS92003 is 3/4" (0.750") inches thick. The spacer is designed for installation on an F150 running a rear suspension lift that has pulled the driveshaft slip yoke too far out of the transfer case. Ford and Mercury based passenger cars are also installing this spacer after a rear driveshaft swap has been performed. It is very important to note that this spacer could cause damage to the transfer case or transmission tail cone if the driveshaft plunge is so great that it forces the yoke too far forward. The black and white image shows the FTS92003 installed on the vehicle:

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