Description Pack everything you need for a day on the job with the FLEX FSM1101-3 3-Pc. Storage System. Quick-connect interlocking attachment points offer fast and effortless connectivity to customize your layout with any piece in the FLEX FSM1101-3 STACK PACK™ storage system. IP65 all-weather protection shields your tools and accessories from the elements, and an impact-resistant polypropylene body with aluminum reinforced corners offers protection from the toughest jobsite conditions. Complete with the FLEX FSM1101-3 STACK PACK™ Rolling Tool Box, Medium Tool Box, and Suitcase Tool Box, you’ll have enough storage to bring the workshop with you to and from the jobsite.