This two handle, eleven feeler blade set is designed for use when setting valve tappets on many import vehicles. - Blades have 30 degree offset for easy use. - Contains: Eleven - 3" x 1/2" blades with thicknesses. 004. 005. 006. 007. 008. 009. 010. 011. 012. 013. 014 (.102mm-.356mm).