ATLAS® RIV 903 Hand Tool About Fasteners Tools Technical Contact/Request Info Catalog Catálogo Tool Selector Select a Tool: AE10 Hand Tool L6000 Installation Tool L-845/722 Hex Wrench Series 800 900 RIV938 RIV938S RIV939 RIV912 RIV942 RIV998V RIV916 RIV949 RIV916B RIV790 RIV990/991 RIV901 RIV903 RIV905 RIV938 and RIV939 Process Monitoring Speed Ratchet Tool RIV903CU – Part number 4516600 (weight 4.85 lbs.) – Unified kit in case installs #6-32, #8-32, #10-32, 1/4-20, 5/16-18, and 3/8-16. RIV903C – Part number 3675800 (weight 2200 grams) – Metric kit in case installs M3, M4, M5, M6, M8, and M10.