Fitment: This 23300 small engine valve spring compressor is designed for all stock valve spring applications, such as for Briggs and Stratton, Clinton, Harley-Davidson for springs 3/4 inches to 1-1/16 inches Features: 1) designed to works on Springs 3/4″ to 1-1/16″. Fit for Briggs and Stratton, Clinton, Harley-Davidson & More Engine. Replace for Part Number 23300 .