Slater Tools manufactures custom inspection ring gages for your specific application. Spline, serration, torx-type, J500, AS1300, D shape and other form Go/ No-Go gages are used to inspect your parts for machining process variations such as form size, twist, tool wear, etc. Slater Tools Go/ No-Go Gages are produced from oil hardened M2 high speed steel and can be custom designed to any shape or size to fit your custom needs.