{"product_id":"grover-original-rotomatics-machineheads-3-3-keystone-button-chrome","title":"Grover Original Rotomatics Machineheads ~ 3+3 Keystone Button ~ Chrome","description":"\u003cp\u003eFor standard guitars, set of 6.\u003c\/p\u003e\n\u003cp\u003eThe 102-18 Series machine heads are a triumph in engineering and styling. The housing provides a maximum bearing for worm, gear, and string post. The 18:1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. Countersunk tension screw permits player to regulate turning tension to any degree. Enclosed gear box with special lubricant for a lifetime of trouble-free service..\u003c\/p\u003e\n\u003cp\u003e18:1 gear ratio\u003cbr\u003e25\/64” post hole\u003cbr\u003ePost length to hole: 23mm\u003cbr\u003eOverall post length: 28.2mm\u003cbr\u003eWeight per pc\/per set: 1.6oz\/9.6oz\u003cbr\u003eMax. string gauge: .074”\u003cbr\u003eHardware included (bushings, washers, screws)\u003cbr\u003e\u003cbr\u003eDrop-in replacement for:\u003cbr\u003e• 102 Series\u003cbr\u003e• 102V Series\u003cbr\u003e• 103 Series\u003cbr\u003e• 106 Series\u003cbr\u003e• 109 Series\u003cbr\u003e• 109-18 Series\u003cbr\u003e• 135 Series (Top mounting hole will be visible)\u003cbr\u003e• 136 Series (Top mounting hole will be visible)\u003cbr\u003e• 502 Series\u003cbr\u003e• 509 Series\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor detailed specifications and\/or fitting guides please locate this item on the \u003c\/span\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/grotro.com\/product-category\/companies\/grover-musical-products\/tuning-keys\/\" data-mce-href=\"https:\/\/grotro.com\/product-category\/companies\/grover-musical-products\/tuning-keys\/\"\u003eGrover website\u003c\/a\u003e\u003c\/strong\u003e\u003cspan\u003e where they offer more information.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grover","offers":[{"title":"Default Title","offer_id":51855954346313,"sku":"102-18CK","price":35.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/9330\/0809\/files\/102_18CK_1_5189b660-3e9a-4e06-ae1e-b4eb5552bed9.jpg?v=1741344549","url":"https:\/\/jhs-b2b-test.myshopify.com\/products\/grover-original-rotomatics-machineheads-3-3-keystone-button-chrome","provider":"JHS B2B 2025","version":"1.0","type":"link"}