Stroller bag hook

A stroller bag hook is a C-shaped clip that snaps onto round stroller tubes (10–60 mm diameter) and hangs a J-shaped hook arm below for suspending bags or accessories. The clip opening is adjustable as a percentage of tube diameter so it grips securely without tools; the hook arm length, thickness, inner radius, and tip height are all tunable to fit different bag handles and desired drop distance. Designed for FDM 3D printing in PLA with layer lines running around the bends for strength.