Proto JRR10028 1 Drive Retaining Ring - 1-3/4 Groove
https://www.sawab.app/shop/jrr10028-proto-jrr10028-1-drive-retaining-ring-1-3-4-groove-1602
https://www.sawab.app/web/image/product.template/1602/image_1920?unique=b300c89
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Large drive size crush gauge retaining ring.Part numbers are embossed on the rings near the point at which the pin and ring meet.
