Tool set includes five sizes: 12.5 x 10 mm, 14 x 12 mm, 16 x 12 mm, 18 x 16 mm, and 18 x 12 mm This tool set makes for quick and easy removal and installation of seal head assemblies These tools protect the shock shaft seal when installing the seal head onto the shaft Complete with case for organized storage and cleanliness. TOOL SHOCK SEAL SET