The Cal-Van Universal Brake Bleeder Adapter, No. 24630, is designed to replace brake bleeder adapters and quickly adjusts for various styles of master cylinders on a wide variety of vehicles. The tool has a low-profile design for use in and around tight spaces. It fits a wide variety of vehicles and is designed with a 90-degree rotating coupler for easy access. Fits brake fluid reservoirs with an opening diameter from 1" to 2.76". Adjustable arms move vertically and horizontally for a secure fit. Compatible with both disc and drum brake systems. Maximum holding pressure of 50 psi.