19.00Mm-19.30Mm Black Guard™ Class Zz No-Go(Minus) Gage Pin Assembly, Single End Handle With Red Cap No-Go(Minus),Yellow Handle,Red Cap Standard Class Zz (.0002" Or .005Mm) Go(Plus) Only, No-Go(Minus) Only Or Go & No-Go Assemblies. Available In .0005” Or .01Mm Sizes. Choose Your Nominal Size(S) And Specify The Direction Of Tolerance , Either Go (Plus) Or No-Go (Minus). Class Zz Go/Nogo Assemblies Are Economical And Very Versatile For Gaging. A Great Go/No-Go Inspection Tool; If The Go (Green End) Fits And The Nogo (Red End) Doesn't, Your Part Passes Inspection. It Doesn't Get Any Easier! Certificate Of Accuracy Included. Vermont Gage Usa Part #932108220. At Checkout, In The 'Additional Instructions' Field, Specify The Size(S) Of Gage Member(S) In .0005" Or .01Mm Sizes And The Direction Of Tolerance. For Example: .2480" Go And .2520" Nogo. You May Also Include Up To 25 Characters Of Custom Handle Marking At No Additional Charge.