1OE Number: The referencing OE number of this interior bulkhead nut metal wrench are 151602, 44097, 788379668433, molded and designed depend on the original data. 2Fitment: The bulkhead nut removal install tool is a replacement for Sand Filter, for Pentair PacFab, for Triton Ii TR40, 50, 60, 100, 140. 3High Performance: Designed to easily and correctly install and remove internal muffle nuts to prevent damage and leakage, ideal for 3?1/4in nuts. 4Secure and Precise Grip: The wrench features a strong grip that provides a secure and comfortable hold, allowing for precise control while loosening or tightening. 5Compact Size: With its compact and slim design, this wrench allows for easy access to hard to reach areas, making it ideal for tight spaces inside vehicles.