{"product_id":"firenock-aerooutsert-12-pack-166-4mm-shafts","title":"Firenock AeroOutsert (12-pack) — .166 \/ 4mm shafts","description":"\u003cp\u003ePrecision-forged 7075-T6 aluminum outsert collars for .166 (4mm) micro-diameter hunting shafts. Each size is matched to a specific shaft OD — pick the size that matches your shaft's measured outer diameter for true broadhead alignment.\u003c\/p\u003e\u003ch4\u003eWhy these matter\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOD-matched fitment means no broadhead wobble, no spin-out, no group flyers\u003c\/li\u003e\n\u003cli\u003eOutsert design (not insert) keeps shaft wall thickness intact at the impact point\u003c\/li\u003e\n\u003cli\u003e7075-T6 aluminum — 60% lighter than steel collars at the same strength\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to choose\u003c\/h4\u003e\u003cp\u003eMeasure the OD of your shaft with calipers, then select the closest size below. Firenock makes these in 0.5-thou OD increments because micro-diameter tolerances vary by manufacturer.\u003c\/p\u003e\u003cp\u003e12-pack. Ships from Firenock LLC. Typical lead time 3–5 business days.\u003c\/p\u003e","brand":"Firenock","offers":[{"title":"AOA568 — OD 0.2685\"","offer_id":47844947886306,"sku":"FN-AOA568","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA577 — OD 0.2725\"","offer_id":47844947919074,"sku":"FN-AOA577","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA579 — OD 0.2735\"","offer_id":47844947951842,"sku":"FN-AOA579","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA583 — OD 0.2755\"","offer_id":47844947984610,"sku":"FN-AOA583","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA589 — OD 0.2785\"","offer_id":47844948017378,"sku":"FN-AOA589","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA597 — OD 0.2825\"","offer_id":47844948050146,"sku":"FN-AOA597","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA602 — OD 0.285\"","offer_id":47844948082914,"sku":"FN-AOA602","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA606 — OD 0.287\"","offer_id":47844948115682,"sku":"FN-AOA606","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA612 — OD 0.290\"","offer_id":47844948148450,"sku":"FN-AOA612","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA615 — OD 0.2915\"","offer_id":47844948181218,"sku":"FN-AOA615","price":26.0,"currency_code":"USD","in_stock":true},{"title":"AOA622 — OD 0.295\"","offer_id":47844948213986,"sku":"FN-AOA622","price":26.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/sparrowexpeditions.com\/products\/firenock-aerooutsert-12-pack-166-4mm-shafts","provider":"Sparrow Expeditions","version":"1.0","type":"link"}