{"product_id":"tackform-2-duralock-20-series-dual-20mm-ball-and-socket-arm-black-metal-short-reach-with-optional-anti-theft-knob","title":"Tackform 2\" DuraLock 20 Series Dual 20mm Ball-and-Socket Arm, Black — Metal Short Reach with Optional Anti-Theft Knob","description":"\u003cp\u003e\u003cstrong\u003eThis is a compact, heavy-duty 2\" Tackform DuraLock 20 Series double 20mm ball-and-socket mounting arm with an optional anti-theft knob for a secure, low-profile device mount.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSmall but engineered for strength, the Tackform 2\" DuraLock dual-socket arm gives you a very short reach mounting solution built around the 20mm ball-and-socket ecosystem. It fits Tackform’s 20 Series platform and most other 20mm systems (not compatible with 25.4mm \/ 1\" balls) and is tuned for high load capacity and long-term durability. The single-knob design makes repositioning swift, while the optional patent-pending anti-theft knob reduces the chance of accidental or opportunistic removal in demanding environments.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this arm handle vibration and heavy use?\u003c\/h3\u003e\n\u003cp\u003eThe arm is metal-constructed and tested to higher load capacities than many competitors, giving a robust safety margin under normal and off-road conditions. Its short span keeps leverage low, reducing wobble and stress on sockets during vibration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2\" overall length with 1.3\" ball-center spacing minimizes torque on mounts\u003c\/li\u003e\n  \u003cli\u003eEngineered safety factor and material selection for repeated use\u003c\/li\u003e\n  \u003cli\u003eSingle-knob clamping locks movement for stable, vibration-resistant hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my existing 20mm mounting system?\u003c\/h3\u003e\n\u003cp\u003eYes — the DuraLock 20 Series arm is compatible with Tackform’s 20 Series accessories and with many third-party parts that use a 20mm ball-and-socket interface, including common brands that follow that standard. It is not designed for 25.4mm \/ 1\" (B-sized) balls.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect fit with Tackform 20 Series components\u003c\/li\u003e\n  \u003cli\u003eWorks with many Bulletpoint, 67 Designs, iBOLT, and other 20mm systems\u003c\/li\u003e\n  \u003cli\u003eNot suitable for larger 25.4mm \/ 1\" ball systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the optional anti-theft knob do and when should I use it?\u003c\/h3\u003e\n\u003cp\u003eThe optional, patent-pending anti-theft knob adds resistance to unauthorized quick-release attempts and helps prevent the ball from slipping out of the socket if the fastener isn’t fully tightened. It’s useful for vehicles or public settings where a mounted device could be targeted or where rapid movement might loosen simple knobs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps deter grab-and-run theft scenarios\u003c\/li\u003e\n  \u003cli\u003ePrevents ball disengagement from the socket if under-torqued\u003c\/li\u003e\n  \u003cli\u003eCan be installed or removed depending on user preference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow compact is this arm and why choose it over longer arms?\u003c\/h3\u003e\n\u003cp\u003eThis is Tackform’s shortest double-socket arm, designed for tight installations where minimal projection is required. The ultra-short reach reduces leverage, improving stability and lowering the chance of snagging or accidental impact in confined spaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1.3\" ball-center to ball-center spacing for a minimal footprint\u003c\/li\u003e\n  \u003cli\u003eIdeal for dash, center console, or close-proximity device placement\u003c\/li\u003e\n  \u003cli\u003eSingle knob allows rapid repositioning while delivering a firm lock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This DuraLock 20 Series 2\" arm is aimed at riders, drivers, and equipment installers who need a rugged, low-profile mounting solution that integrates with the 20mm ecosystem. Choose it if you want proven mechanical strength, minimal reach, and the option to add anti-theft protection for mounts used on motorcycles, side-by-sides (SXS), boats, or public-facing vehicle applications. If you use 25.4mm\/1\" ball systems, select a compatible size instead.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this compatible with 1-inch (25.4mm) balls?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This unit is designed for 20mm ball systems and is not compatible with 25.4mm\/1\" balls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I add the anti-theft knob later?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The optional anti-theft knob can be installed or removed depending on your security needs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tackform","offers":[{"title":"Default Title","offer_id":48084441825438,"sku":"B0CQZ8WH5D","price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/tackform-20-series-front-view.jpg?v=1785855407","url":"https:\/\/northtrailauto.ca\/products\/tackform-2-duralock-20-series-dual-20mm-ball-and-socket-arm-black-metal-short-reach-with-optional-anti-theft-knob","provider":"North Trail Auto","version":"1.0","type":"link"}