{"product_id":"marshalltown-company-marshalltown-qlt-rub-brick","title":"Marshalltown QLT Rub Brick, 3 in. x 6 in. Coarse 20 Grit Concrete Cleaning Block – RB192","description":"\u003ch1\u003eMarshalltown QLT Rub Brick, 3 in. x 6 in. Coarse 20 Grit Concrete Cleaning Block\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThe Marshalltown QLT Rub Brick is a 3 in. wide by 6 in. long coarse 20 grit rubbing brick used to knock down mortar drips, form marks and surface imperfections on concrete and masonry. Sold as one brick, it is a standard concrete finishing accessory for cleaning formed concrete surfaces.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoarse 20 grit:\u003c\/strong\u003e Coarse 20 grit surface quickly removes mortar, form marks, and surface imperfections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJob-site size:\u003c\/strong\u003e 3 in. x 6 in. block size provides a good working surface that fits the hand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcrete finishing:\u003c\/strong\u003e Designed as a rub brick for cleaning and smoothing concrete and masonry surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro brand:\u003c\/strong\u003e Marshalltown QLT line is a trusted concrete finishing tool line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to use:\u003c\/strong\u003e No assembly required; use straight from the box.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMarshalltown Company\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRB192\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e035965064408\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 rub brick\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAbrasive rubbing brick (carborundum-type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 in. W x 6 in. L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 in. (width as listed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoarse 20 grit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 rub brick\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo assembly required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCleaning and smoothing concrete and masonry surfaces, removing mortar and form marks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eA standalone abrasive block with no additional accessories required. Pairs with other Marshalltown concrete finishing tools such as trowels, floats, and edgers on formed concrete work.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a rub brick used for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is used to rub down concrete and masonry to remove mortar drips, form marks, and other surface imperfections.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What size is the brick?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It measures 3 in. wide by 6 in. long.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How coarse is the abrasive?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is a coarse 20 grit brick for fast material removal.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How many bricks come in a package?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One rub brick per package.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it need any assembly?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, it is ready to use out of the box.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it suitable for professional concrete work?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is part of Marshalltown's QLT line of concrete finishing tools used by pros.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eA 20 grit rub brick is the go-to tool for cleaning bug holes and form marks off poured concrete walls before inspection or painting—use it dry for light cleanup or wet for heavy rubdowns to control dust. Keep the brick moving in circular strokes to avoid gouging. If you need finer finishing after rough rubdown, follow with a finer grit rubbing stone or float.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAbrasive rub bricks produce concrete and silica dust—wear a NIOSH-approved dust mask or respirator, safety glasses, and gloves, and avoid dry rubbing without dust control.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003ePick up the Marshalltown QLT Rub Brick today for fast cleanup of concrete and masonry surfaces.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Marshalltown Company","offers":[{"title":"Default Title","offer_id":53396013973871,"sku":"MTN.RB192","price":11.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/bfd96918-177d-4141-8ae3-69ba1a5a246e.jpg?v=1789757499","url":"https:\/\/superarbor.io\/products\/marshalltown-company-marshalltown-qlt-rub-brick","provider":"Super Arbor","version":"1.0","type":"link"}