Magnetic Parts Tray 4-Pack – Collapsible Tool Holder for Screws & Bolts | Double-Sided Magnets, 4.5" Bowls, Collapsible, Scratch-Proof, Heat-Resistant, Green, for Workshop, Auto & Home Color:Green and the two-wire system does

and the two-wire system does not need to connect an additional power source

namely PSI

[Length=15Feet =4

portable computers laptop connected to the keyboard and mouse hard disk U disk card reader mobile hard disk

Warranty is for REPLACEMENT of the parts only

Magnetic Parts Tray 4-Pack – Collapsible Tool Holder for Screws & Bolts | Double-Sided Magnets, 4.5" Bowls, Collapsible, Scratch-Proof, Heat-Resistant, Green, for Workshop, Auto & Home Color:Green and the two-wire system doesMagnetic Parts Tray 4 Pack Collapsible Tool Holder for Screws & Bolts Double Sided Magnets, 4. 5" Bowls, Collapsible, Scratch Proof, Heat Resistant, Green, for Workshop, Auto & Home Product Features 4 Pack Collapsible Magnetic Parts Trays SetEach square tray measures: 4. 5" x 4. 5" and collapses to 0. 75" deep and expands to 2" deep to fit any job. The perfect tool box accessory for holding screws, bolts, nuts, washers, small metal tools and parts,