{"product_id":"m390-titanium-multitool-knuckle-duster-ring","title":"M390 Titanium MultiTool Knuckle Duster Ring","description":"Modeling: defense mini finger ring finger tiger\u003cbr\u003e Tritium tube size: 1.5*6mm\u003cbr\u003e Blade material: M390 steel (vacuum heat treatment)\u003cbr\u003e Ring material: TC4 titanium alloy\u003cbr\u003e Hardness: 61HRC\u003cbr\u003e Spindle: HSS high-speed steel\u003cbr\u003e Glass bead: ceramic ball\u003cbr\u003e Size: 9-13\u003cbr\u003e No.09 inner diameter 18.9mm\u003cbr\u003e No.10 inner diameter 19.7mm\u003cbr\u003e No.11 inner diameter 20.6mm\u003cbr\u003e No.12 inner diameter 21.4mm\u003cbr\u003e No. 13 ID 22.2mm\u003cbr\u003e \u003cbr\u003e Tips for choosing a ring cutter: Measure the finger circumference to be worn. \u003cul\u003e  \u003cli\u003eTake a strip of paper with a width of less than 2cm and wrap it around the measuring finger for a week; the strip of paper needs to be close to the skin to avoid errors; pinch the intersection of the strip of paper with your fingers, mark the intersection, and use a straightedge to measure the length to the mark.\u003c\/li\u003e \u003c\/ul\u003e The blade is M390, the finger ring is titanium and upgraded features include the blade being thickened to improve retention, the split design being disassembled, the tailbone being disassembled, titanium color, and blue and black optional.\u003cbr\u003e PS: Removing the blade to wear the finger ring alone is the function of a pure ring.","brand":"EDC-weapon","offers":[{"title":"Upgraded Titanium II - Gray 9-13 (Leave a message when placing an order)","offer_id":67586048098534,"sku":"4993843307047","price":146.0,"currency_code":"USD","in_stock":true},{"title":"Upgraded Titanium II - Black 9-13 (Leave a message when placing an order)","offer_id":67586048131302,"sku":"5027264698256","price":146.0,"currency_code":"USD","in_stock":true},{"title":"Upgraded Titanium II - Blue 9-13 (Leave a message when placing an order)","offer_id":67586048164070,"sku":"5027264698255","price":146.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/1372\/4646\/files\/O1CN01uQxOyd1f2goxiOBj8__741823949.webp?v=1790570678","url":"https:\/\/brassknucklescompany.co.uk\/products\/m390-titanium-multitool-knuckle-duster-ring","provider":"BRASSKNUCKLE","version":"1.0","type":"link"}