Adorama Battery Contact Cleaner Pencil

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adorama : Picture 1 regular $16.95

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Questions about this item:

Shopper  replacement fillers for battery-contact cleaning pen ?
Andrew R  Unfortunately we do not appear replacement brushes.
Shopper  How does this work? Like mechanical pencil? Could it be used to clean inside RAM slots inside computer tower?
PETE L  This is a "mechanical" style pencil loaded with what appears to be fiberglass strands. These durable strands are abrasive enough to clean the tarnishing and film that accumulates. I've used one for years and only replaced it when my first one got lost.
JAMES O  Yes, like a mechanical pencil the top rotates and the "brush-tip" comes out from the tip. The farther out it comes, the more the individual strands of fiberglass separate and the less efficiently the "brush-tip" works. All the cleaning power of the brush is at the tip where the collective individual strands are tightly packed together. So, there is no abrasive effect from the sides of the brush. It is great for memory contacts, and I have used it for that but, while you might get the "brush" down into the slots, I don't think you could keep the individual strands together to clean the sides where the memory chips contact the slot. Also, as it is used, the ends of the individual strands wear off in tiny (almost dust) particles. Those would collect in the slots unless blown out.
RIKKI S  Yes, it twists out like a mechanical pencil. It seems to have a bundle of fiberglass threads (or something like that). I do not know if it would fit inside your RAM slots. It leaves little bits of material behind and I do not know if they are conductive. I would ask an electrician if they know,
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