Check the listing for details. GROUCH 5318813 CONTROL PANEL 1-3/4" KNOB RING ARROW POINT BRASS DULL GREEN PAINT. Condition: New. Listed at 2.50 USD. 11I1011 This Item Up For Offer is a GROUCH INDUSTRIES INC. MILITARY EQUIPEMENT CONTROL KNOB RING P/N 5318813 WHITE ARROW POINT BRASS PAINTED DULL ARMY GREEN . Condition New and Unused, From Government Surplus Old Stock. NSN Number 5355-00-531-8813. Measures 1-3/4" OD. X 1.651" ID. X .055 Thick X 1.628 ID. Lip. Made in the USA by GROUCH INDUSTRIES INC.. 5355-01-531-8813 SPECIFICATIONS MRC Criteria Characteristic STYL STYLE DESIGNATOR A4 ROUND ABKV OUTSIDE DIAMETER 1.750 INCHES NOMINAL ADUM OVERALL THICKNESS 0.500 INCHES NOMINAL ABSX ATTACHMENT METHOD SHAFT ABHG GRIPPING SURFACE CONDITION SMOOTH SR-5 MANUFACTURERS CODE 19200 SR-5 DESIGN CONTROL REFERENCE 5318813 I WELCOME YOUR INTEREST IN THIS ONE, AND ALL MY OTHER ITEMS.