This tool set is used to push out the bushing on the clutch weights and install a new bushing. This is a great tool to have, its simple and easy to use, plus saves time replacing weight bushings on your own. 
 
Weight bushings are essential in clutch maintenance, once a weight bushing goes bad it tilts on the pin, causing rollers to go bad prematurly and starts to dig into the weight pockets on the spider, which can cause the clutch to come out of balance if enough material is scrapped away by the tilted weight. This can also damage the weight itself, which causes you to need new weights. 
 
Save yourself money and performance in the long run by maintaining the weight bushings. 
 
The longer tool is made to push the old bushing out
 
The short tool is for pushing in a new weight bushing