... different size of PLCC IC. using way: 1.can extract PLCC IC easier and no damege of anyother components ... ,can extract IC from PCB or socket ,also can extract PGA,PCLL ,DIP IC ... IC (don't pull it Compulsory ) .it can get pin completely after IC extract 3.pull out the IC directly ... use ,for all contact surface in 5.5cm IC ,can pull out it very easy . Special PLCC IC ROM ...