These are two sticks from a MDD G4 PowerMac.  They are for 167 bus models which include 1.25,1.25dp and 1.42dp.  They also have Vantec heatspreaders.  They are 256mb each and in great working condition from reputable ram dealers (Apple or OWC).  I am selling them as a pair for only 25 bucks!  Shipping is extra (cheap) and will come in an anti static bag.  Get em now before they are gone.