Burford-Finochietto Rib Spreader Back to Products     Catalogue #       400-183   Infant-child Size, 4 pairs of blades, Spread: 6" (154mm) Arm length: 4¼" (108mm) Blade #1: â…ž" x â…ž" (22mm x 23mm) Blade #2: 1â…›" x 1¼" (29mm x 32mm) Blade #3: 1â…›" x 1¾" (29mm x 44mm) Blade #4: 1â…ž" x 1¾" (48mm x 44mm)