Individual Replacement Pins Between .5010" - .6255" Class ZZ GO (PLUS) or NO GO (MINUS) Tolerance: 0.0002" 10 Microfinish or better Gage size must end in .xxx0" or .xxx5" Certificate of Accuracy included PLEASE SPECIFY PLUS OR MINUS WHEN ORDERING. PLUS (GO) tolerance = +0.0002" / -0.0000" MINUS (NO GO) tolerance = +0.0000" / -0.0002" After receipt of order we will email you to get exact size(s) of pin(s) needed. **$50 Minimum Vermont Pin Gage Order Required**