APPLICATION:This Valve Spring Compress is suitable for small to medium engines with overhead valves and diesel engines with deep seated valves and on many OHV petrol/diesel engines. EASY COMPRESSION:The Valve Spring Compress Tool is professional valve spring removal tool for Quick and easy compress, lift and release. Also correctly fitting, installing and removing automotive valve springs. MATERIAL&SPECIFICATION:Please make sure that the size of the product is suitable for your car series.This valve spring compression tool constructed from high-quality metal,with the feature of durable,resisting rust and corrosion. Works with a cylinder head on your workbench or any OVH head removed from the block; 3-inch to 6.5-inch (7.6cm to 16.5cm) capacity with a 6-inch (15.2cm) throat clearance. PRECISION THREAD ROD:The thread rod are extended and reinforced with riveting for strong and stable performance. LONGER HANDLE:The extended ergonomic rubber handle apply you force keep spring compressor and avoid slip.