Look also at the new veion There are two veio of the key holder. The fit veion is for up to nine keys and the second veion for up to five keys. Parts for veion one : 1x key holder_1.stl , 1 x key holder_2.stl , 2x standoff_9 , 1x locking disc_9 , 1x and to prevent the rattle if less than nine keys are italled (For example 2 spacer if you only have seven keys). 3x M3x20 counteink screw (DIN 965) , 3x M3 locknut , 1x M3 washer. Parts for veion two : 1x key holder_1.stl , 1 x key holder_2.stl , 2x standoff_5 , 1x locking disc_5 , 1x and if needed (For example 2 spacer if you only have seven keys). 3x M3x14 counteink screw (DIN 965) , 3x M3 locknut , 1x M3 washer. The part key holder_1.stl needs support. I printed key holder_1.stl and key holder_2.stl with HDglass from Formfutura and 0,175 Layer height, for the standoff and the locking disc I used ApolloX from from Formfutura but you can also use ABS.