This stackable Packout bracket is a modular matching accessory designed for Packout series tool storage boxes, enabling stable vertical stacking of multiple tool containers to maximize workshop and vehicle storage space. Constructed with thick reinforced steel and anti-rust coating, the locking buckle structure tightly interlocks stacked boxes to prevent sliding and tipping during transportation. Quick clip-on installation requires no extra tools, perfectly compatible with all standard Packout tool chests, rolling tool boxes and drawer organizers. It creates a tidy vertical storage tower for power tools, hardware and repair supplies, ideal for job site vans, garage workshops and mobile construction workstations.