This product is applied extensively in the binding of notebook, middle and high-class hanging calendar, album, office volume,etc

This product is applied extensively in the binding of notebook, middle and high-class hanging calendar, album, office volume, etc.

Features:

1)Good quality,

2)Reasonable price,

3)Reliable,

4)Pitch and diameter.

P3:1    1/4"       (6.4mm)

P3:1     5/16"    (7.9mm)

P3:1     3/8"     (9.5mm)

P3:1     7/16"     (11.1m)

P3:1     1/2"      (12.7mm)

P3:1      9/16"    (14.3mm)

P2:1      5/8"      (15.9mm)

P2:1      3/4"      (19.1mm)

P2:1      7/8"      (22.2mm)    

P2:1      1"         (25.4mm)                                     

P2:1      1-1/8"    (28.5mm)

P2:1      1-1/8"    (32mm) 

P2:1      1-1/2"    (38mm).               

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