ITEM NAME:Universal Spring Tensioner For Overhead Valve Automotive Remove Install Tools Description: Universal Overhead Valve Spring Compressor is a great option for compressing valve springs - facilitating valve spring removal or valve stem seal replacement on many Cars, & Light Trucks Ideal for use on installed cylinder heads, especially in vehicles with tight underhood clearances, but can be used for bench work as well Spring loaded jaws easily grip and compress valve springs Legs designed with a built-in offset to compensate for spring wind - keeping tool vertical and stable during use Includes two spring adapters; fits valve spring retainers up to 1-13/16 inch diameter; 1-3/8 to 5-5/8 inch jaw opening; 5-7/8 inch throat clearance. Specification: Size: Approx.14x7.5cm Package Includes: 1 Piece Overhead Valve Spring Compressor SKU: DMO0012679952032096.1 Piece Overhead Valve Spring Compressor. Ideal for use on installed cylinder heads, especially in vehicles with tight underhood clearances, but can be used for bench work as well. Spring loaded jaws easily grip and compress valve springs.