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Review on πŸ”© HVAZI Abs Plastic Round Spacers Kit: OD 7mm ID 4.2mm for M4 Screws - Tube Assortment for Easy Installation & Alignment by Brian Page

Revainrating 5 out of 5

Suitable hole size for 4mm mounting screws.

I have built many gears that use 4mm long machine threads. I had to place an attachment, they are perfect. many different lengths, I'm happy with that.

Pros
  • Easy Installation
Cons
  • -