Castaneda Sternal Retractors arms and blades aluminum, ratchet bar stainless steel Back to Products     Catalogue #       400-190   Newborn size Spread: 2½" (65mm) Arm length: 2â…œ" (60mm) Blades: 1â…œ" x ½" (34mm x 13mm) 400-192   Infant size Spread: 3â…›" (80mm) Arm length: 3â…›" (80mm) Blades: 1¾" x ½" (45mm x 13mm) 400-194   Child size Spread: 4¾" (120mm) Arm length: 5" (127mm) Blades: 2â…œ" x ¾" (60mm x 17.5mm)