The #105 is a handy and sturdy cast aluminum work tray with deep-walled compartments and assorted tool slots for holding tools, lubes and small parts. Fits upright tubes on PRS-2, PRS-2 OS, PRS-2 OS-1, PRS-2 OS-2, PRS-3, PRS-3 OS, PRS-3 OS-1, PRS-3 OS-2, PRS-3.2-1, PRS-3.2-2, PRS-13 Repair Stands. Also fits 1996 and newer PRS-6, PCS-1, PCS-4, PCS-4-1, PCS-4-2 Repair Stands. The 105 tray will fit tubing from 1-7/16" to 1-3/4" (36mm to 45mm)