Good i got this for my twin sons as they are taking geometry this year and it brok as soon as one of them opened it not just that but the center point where you put the silver part is to sharp and make wholes in the paper and moves around when it makes the whole this is really a bad product dont waste your money just got it today for my son

Ugh very nice compass

Lead cant be sharpened easily causing errors in my designs

Not sure where i placed the extra leads that came with it but either way youd have to keep buying refills