Trimline Replacement Blood Pressure Bulb. High-Quality Non-latex Standard Replacement Bulb, Suitable for Use with Multiple Blood Pressure Systems. Trimline Medical’s Blood Pressure products are made of the highest quality materials, to exacting standards for increased performance and reliability. All of Trimline Medical’s products are made to comply with ISO standards to ensure that it will perform to a high standard during patient testing. GREY BULB SHOWN. Packaging: 1/Each.