Fitment This Small Engine Valve Spring Compressor is designed to works on Springs 3/4″ to 1-1/16″. Fits for Briggs and Stratton, Clinton, Harley-Davidson & More Engine. Replacement for Part# 23300 Premium Valve Spring Compressor Meticulously designed with a heavy-duty frame and screw for unparalleled rigidity and durability. Crafted from top-tier materials, this Small Engine Valve Spring Compressor guarantees strength and sturdiness, ensuring long-lasting performance. Experience superior quality and reliability for all your engine maintenance needs Efficient Tool .