{"product_id":"schaefer-brush-43381-spiral-tube-brush-4-5in-dia-7-5in-oal","title":"Schaefer Brush 43381 Spiral Tube Brush 4.5in Dia 7.5in Oal","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHAEFER BRUSH 43381 is a double stem spiral tube brush designed for cleaning the interior walls of tubes, pipes, and cylindrical passages. The brush features a 4.5-inch diameter cleaning section made from tempered steel wire, giving it the stiffness needed to scrub scale, debris, and buildup from metal surfaces. The overall length is 7.5 inches, with a 0.25-inch male NPT connection for mounting to an extension rod or drill chuck. HVAC technicians, plumbers, and maintenance professionals use this type of brush during system cleaning, coil maintenance, and heat exchanger service.\u003c\/p\u003e\n\u003cp\u003eThis tube brush is suited for residential and light commercial maintenance work where internal tube or pipe cleaning is required. The double stem spiral construction evenly distributes wire contact around the bore circumference, making it effective in boiler tubes, condenser tubes, heat exchanger passages, and similar cylindrical surfaces. The tempered steel wire fill handles tough deposits that softer nylon or polypropylene fill cannot address. The 0.25-inch male NPT fitting allows connection to standard extension handles and power-drive adapters commonly used in the trade.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4.5-inch brush diameter for cleaning tubes and pipes of matching bore size\u003c\/li\u003e\n  \u003cli\u003eTempered steel wire fill for aggressive scrubbing of scale and hard deposits\u003c\/li\u003e\n  \u003cli\u003eDouble stem spiral construction provides uniform wall contact around the full circumference\u003c\/li\u003e\n  \u003cli\u003e7.5-inch overall length accommodates standard tube depths\u003c\/li\u003e\n  \u003cli\u003e0.25-inch male NPT connection compatible with extension rods and drill adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and general-use tube brush for residential and commercial tube-cleaning applications requiring a 4.5-inch diameter brush with a 0.25-inch male NPT drive connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this brush is performed by HVAC technicians, plumbers, and maintenance mechanics. Before tube cleaning, isolate and de-energize the associated system and relieve any fluid or pressure in the circuit. Secure the brush to a compatible extension rod or low-speed drill before inserting into the tube bore. Avoid running the brush at high rotational speeds that could cause the stems to deform or damage tube walls.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Length\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 0.25 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Gender\u003c\/strong\u003e: Male\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFill Material\u003c\/strong\u003e: Tempered Steel Wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.44 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCHAEFER BRUSH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 43381\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51542874620210,"sku":"43381","price":28.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bd4d105a5d0ae73b81d5a5dcf5e7cc45.jpg?v=1785909553","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43381-spiral-tube-brush-4-5in-dia-7-5in-oal","provider":"Voomi Supply","version":"1.0","type":"link"}