PC Valet Ltd

Metal static-shielding (mixed pack) bags - ideal when replacing components or stripping down your PC, Laptop, anti-static shielding ziplock / gripseal bags providing protection against ESD.
Suitable for storing electronic products which are sensitive to static, e.g. PCBs, IC (integrated circuit), CD/DVD drive, HD, memory, motherboard, PCI cards, etc.

Contents (sizes are approximate):
2 x 4x6" (10x15 cm) - ideal for memory (max 2 sticks per bag)
2 x 6x10" (15x25 cm) - perfect size for hard drives, CD and DVD drives, graphics cards, PCI cards
1 x 10x12" (25x30 cm) - a good size for a micro motherboards or PCBs
1 x 12x16" (30x40 cm) - ideal for most standard size motherboards or PCBs

Metal static-Shielding bags (Faraday cage) features:
Four layer protection guards against static charges inside and out.
Semi-transparent for easy content identification.
Surface resistance of 10^8-10^11Ω.
Conforms to MIL-PRF-81705D Type III, EIA 625, EIA 541, ANSI/ESD S-20.20.

The meaning of a Faraday cage - the electricity generated by an electro-static discharge is carried around the metal bag rather than through, so your expensive component will be protected.

Please remember not to place any electronic component on the metal shielding Bag - always place them inside. Do not use bags if they have been damaged in any way (e.g. folded, split, torn etc) - the static-shielding properties of the (Faraday cage) metal shielding bag may not work."