You may take with you up to Four Tools fitted to your personal load-out when exploring derelicts. Each tool performs a specific task.
Grav sleds enable you to collect and return resources back to your ships cargo hold. Larger Grav sleds will also enable you to remove larger items later when you access B1-C10 size derelicts.
There are various other tools which performs various tasks whilst exploring. You will require a Mechanical, Electrical and Diagnostic set if you wish to recover High Tech loot. As more is added to exploring derelicts more tools will be released.
Tools are engineered using Blue Prints, you can engineer them or purchase them from fellow players who have crafted them already.