Key Features: Large tray ideal for holding small parts and toolsDeep sides so small items stay putA variety of slots and holes hold any size or shape tooFits all Park tool Repair Stands except PRS-2OS PRS-3OS PRS-4OS 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.