{"product_id":"madison-replacement-nib-units-6-steel-eef-ef-f-med-b-bb","title":"Madison replacement Size 6 Regular and Special Grind Nib Units","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eReplacement parts for \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eOsprey\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e Madison Fountain pens are available just as a Nib Unit or as a complete Assembly\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eThis listing provides Size 6 Regular nib units, Special Grind nib unit, Zebra G and Size 5.5 Ultra-flex Nib Unit choices.\u003c\/p\u003e\n\u003cp\u003eSize 6 Ultra-flex and Size 5 Ultraflex nib units are only available as Assemblies. Line widths (cross – down strokes) associated with the nib size:\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEEF – 0.45mm\u003c\/p\u003e\n\u003cp\u003eEF – 0.55mm\u003c\/p\u003e\n\u003cp\u003eFine – 0.65mm\u003c\/p\u003e\n\u003cp\u003eMed – 0.75mm\u003c\/p\u003e\n\u003cp\u003eBroad – 0.9mm-1mm\u003c\/p\u003e\n\u003cp\u003eDouble Broad - 1mm - 1.2mm (great for expressing shading or sheen Inks)\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-style=\"text-decoration: underline;\"\u003e\u003cu\u003eSpecial Grinds (Steel only):\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBroad Stub – 0.9 -1.0mm\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eDouble Broad Stub (BB-S) - 1.2mm-1.5mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBroad- Left Oblique 1mm-1.2mm\u003c\/p\u003e\n\u003cp\u003eBroad- Right Oblique 1mm-1.2mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eArchitect Broad – 1mm-1.2mm\u003c\/p\u003e\n\u003cp\u003eArchitect Double Broad (BB) – 1.2mm -1.5mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eZoom Double Broad (BB) – 1.2mm -1.5mm\u003c\/p\u003e","brand":"Osprey Pens","offers":[{"title":"#6  Steel Extra-Extra-Fine (EEF) NU \/ None","offer_id":45894030491947,"sku":"NU-Sz6-EEF","price":13.0,"currency_code":"USD","in_stock":true},{"title":"#6  Steel Extra-Extra-Fine (EEF) NU \/ MAD2 Outer Section - 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Midnight Blue","offer_id":45894030655787,"sku":"NU-Sz6-B-MbluMAD2","price":13.75,"currency_code":"USD","in_stock":true},{"title":"#6 Steel BB (DoubleBroad) NU \/ None","offer_id":45894030754091,"sku":"NU-Sz6-BB","price":15.0,"currency_code":"USD","in_stock":true},{"title":"#6 Steel BB (DoubleBroad) NU \/ MAD2 Outer Section - Clear","offer_id":45893210210603,"sku":"NU-Sz6-BB-ClearMAD2","price":15.75,"currency_code":"USD","in_stock":true},{"title":"#6 Steel BB (DoubleBroad) NU \/ MAD2 Outer Section - Midnight Blue","offer_id":45894030721323,"sku":"NU-Sz6-BB-MbluMAD2","price":15.75,"currency_code":"USD","in_stock":true},{"title":"Special Grind Broad-Stub (BS) NU \/ None","offer_id":45895336427819,"sku":"","price":13.0,"currency_code":"USD","in_stock":false},{"title":"Special Grind Broad-Stub (BS) NU \/ MAD2 Outer Section - Clear","offer_id":45895336460587,"sku":"","price":13.0,"currency_code":"USD","in_stock":false},{"title":"Special Grind Broad-Stub (BS) NU \/ MAD2 Outer Section - Midnight Blue","offer_id":45895336493355,"sku":"","price":13.0,"currency_code":"USD","in_stock":false},{"title":"Special Grind DoubleBroad-Stub (BB-S) NU \/ None","offer_id":45895336526123,"sku":"","price":13.0,"currency_code":"USD","in_stock":false},{"title":"Special Grind DoubleBroad-Stub (BB-S) NU \/ MAD2 Outer Section - 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