(21) Small grub screw 1.4mm 1.7mm x 20 pieces locking dell screw set Leica 3a 3f
1.4mm silver for speed dial other 3f, slow dial 3a 3c 3f, front ring of Summar50mm, barrel of Summitar 50mm. 1.4mm silver for speed dial Leica early 3f, slow dial 3a, barrel of summicron, summar50mm, front ring of immarect.