OTC's Large Valve Spring Compressor is designed to quickly and easily compress valve springs on overhead valve engines. Includes two valve spring adapters, which fit valve spring retainers up to 1 inch (25 mm) and 1-3/16 inches (30 mm). Unique, direct action compressor lever gives better visibility of valve spring retainers located in difficult to access areas. Jaw opening of 1-3/8 inches to 5-5/8 inches (35 mm to 142 mm). Throat clearance of 5-7/8 inches (150 mm). Durable plated finish. High-grade materials ensure quality performance over the lifetime of the tools. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.