Keep your Littmann Master Cardiology stethoscope ready for daily exams with this 3M Canada spare parts kit. It contains one grey tunable diaphragm and rim assembly for the stethoscope chestpiece. Designed specifically for the Littmann Master Cardiology model, it’s a practical replacement for clinic use, mobile vets, and farm visits. A dependable veterinary stethoscope accessory for mixed-animal practices and livestock health products kits.