Copper column 2*2 (internal teeth M2 * total length 2mm)

Copper column 2*3 (internal teeth M2 * total length 3mm)

Copper column 2*4

Copper column 2*5

Copper column 2*6

Copper column 2*7

Copper column 2*8

Copper column 2*9

Copper column 2*10

Copper column 2*11

Copper column 2*12

Copper column 2*13

Copper column 2*14

Copper column 2*15

Copper column 2*16

Copper column 2*17

Copper column 2*18

Copper column 2*19

Copper column 2*20

Copper column 2*21

Copper column 2*22

Copper column 2*23

Copper column 2*24

Copper column 2*25

Copper column 2*26

Copper column 2*27

Copper column 2*28

Copper column 2*29

Copper column 2*30

Copper column 2*31

Copper column 2*32

Copper column 2*33

Copper column 2*34

Copper column 2*35

Copper column 2*36

Copper column 2*37

Copper column 2*38

Copper column 2*39

Copper column 2*40