Note:

During the production process, there may be stains or slight scratches on the product, which is a normal phenomenon. Wiping with a damp tissue can remove them
If you mind, please do not place an order

Product detail:

D20:
Outside Size:20mm*10mm
Inside Size : Diameter 8mm.
Suitable for cable diameter less than 8mm.
Such as :Network cable, fiber optic cable

D30:
Outside Size:30mm*10mm
Inside Size : 6mm*10mm
Suitable for cable :
Socket cable , 2Pcs Network cable.