The Starrett PT45500 Color‑Coded Adjustable Go/No‑Go Pin Gage Handle is precision‑engineered to improve the usability, accuracy, and speed of working with pin gages. Designed for larger pin sizes in the 0.251" to 0.500" range, this handle lets inspectors and machinists securely hold, manipulate, and evaluate pin gages during fit testing and dimensional verification.