The Laerdal-100-00550 Bulb; PULSE-W/TUB/FITTNG – Each is a genuine Laerdal replacement pulse bulb assembly designed for use with compatible Laerdal training manikins. This component includes the bulb, tubing, and fittings required for simulating pulse function during CPR and medical training exercises. Built with precision and durability, it ensures reliable performance, easy installation, and long-term use in healthcare education environments.