{"product_id":"3-1-2-in-conduit-punch-and-die-set-heavy-duty-hydraulic-knockout","title":"3-1\/2 in Conduit Punch and Die Set - Heavy Duty Hydraulic Knockout","description":"\u003cp\u003eIn this review of the 3-1\/2 in conduit punch and die set the bottom line is clear: this tool is aimed at electricians, metal fabricators, and maintenance techs who need a reliable large knockout that fits standard hydraulic draw studs. The reviewer found the single biggest reason to buy is the combination of hardened tool steel construction and a 12 ton punching requirement that produces clean holes through sheet metal and electrical boxes. It is a straightforward, purpose-built punch that delivers solid \u003cstrong\u003efunctionality\u003c\/strong\u003e without extra frills.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConduit fit:\u003c\/strong\u003e Sized for a 3-1\/2 in conduit fitting which suits common electrical knockout requirements and panel installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActual hole size:\u003c\/strong\u003e Produces a 4.04 in finished hole, ensuring the opening is large enough for intended conduit and fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread compatibility:\u003c\/strong\u003e Uses a standard 3\/4 in-16UN thread to work with widely used hydraulic draw studs and knock out drivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePunching capacity:\u003c\/strong\u003e Rated for up to 12 tons of punching force, giving enough power for clean cuts in thin steel and many other materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial and finish:\u003c\/strong\u003e Made of hardened tool steel with a black oxide finish for wear resistance and reduced corrosion in workshop conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial versatility:\u003c\/strong\u003e Cuts steel, stainless steel, brass, copper, soft aluminum, fiberglass and plastics for a range of shop and field tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis punch and die set is best for professional electricians, industrial maintenance crews, and hobby metalworkers who need a dependable large knockout for electrical boxes and panels. It pairs with hydraulic knockout drivers and is practical when repeated clean holes are required.\u003c\/p\u003e\u003cp\u003eIt is not the right choice for applications that demand punches into very thick plate or exotic aluminum alloys such as 6061 or 7075, nor for users who need a full set of assorted sizes in one purchase; those users should look for different tooling solutions.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHardened tool steel and black oxide finish deliver good durability and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eStandard 3\/4 in-16UN thread fits most hydraulic draw studs for easy integration.\u003c\/li\u003e\n\u003cli\u003eProduces a consistent 4.04 in hole with 12 tons of force, handling steel and stainless panels well.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize receives mixed responses because it is a single large punch rather than part of a multi-size kit.\u003c\/li\u003e\n\u003cli\u003eNot suitable for super alloys or very thick plate beyond the stated thickness capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eConduit fitting size\u003c\/td\u003e\n\u003ctd\u003e3-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual hole size\u003c\/td\u003e\n\u003ctd\u003e4.04 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired punching force\u003c\/td\u003e\n\u003ctd\u003e12 tons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e3\/4 in-16UN (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePunching thickness capacity\u003c\/td\u003e\n\u003ctd\u003e1\/8 in (11 ga) steel; 1\/16 in stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHardened tool steel with black oxide finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe 3-1\/2 in conduit punch and die is a practical, well-made tool for professionals who need a heavy-duty knockout for electrical work and light fabrication. With hardened tool steel, a standard thread fit, and the power to produce clean 4.04 in holes, it represents good value for those who need a single reliably sized punch rather than a multi-piece kit.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this fit my hydraulic knock out driver?\u003c\/strong\u003e\u003cbr\u003eIt uses a standard 3\/4 in-16UN thread, so it fits draw studs and hydraulic drivers that accept that thread size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials can it punch?\u003c\/strong\u003e\u003cbr\u003eThe punch handles steel, stainless steel, brass, copper, soft aluminum, fiberglass and plastics; it is not recommended for 6061, 7075 or other super alloys.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick can it punch?\u003c\/strong\u003e\u003cbr\u003eRated capacity is about 1\/8 in (11 ga) steel and 1\/16 in stainless steel using the stated 12 ton punching force.\u003c\/p\u003e","brand":"AMZCNC","offers":[{"title":"Default Title","offer_id":48614896206043,"sku":"B0B1ZHXSS2","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61rFWAyV5CL._SL1500.jpg?v=1778423118","url":"https:\/\/gearmusthave.com\/products\/3-1-2-in-conduit-punch-and-die-set-heavy-duty-hydraulic-knockout","provider":"GearMustHave","version":"1.0","type":"link"}