Park Work Tray #104. This large tray is ideal for holding small parts and tools. It features deep sides so small items stay put. A variety of slots and holes hold any tool. Fits all Park Tool Repair Stands except PRS-2 OS, PRS-3 OS, and PRS-4 OS, and PRS-15. The current PRS-5 (2002) uses a black vertical tube that mates well with the 104 tray. Pre-2002 PRS-5 models use a blue oval tubing. This blue tubing has marginal but adequate contact with the 104 tray. The 104 tray must be removed for the PRS-5 to be folded and stored into the bag.