{"product_id":"bosch-t121af3-bi-metal-jigsaw-blade-21-tpi-t-shank-3-pack","title":"Bosch t121af3 Bi-metal Jigsaw Blade 21 Tpi T Shank 3 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BOSCH t121af3 is a bi-metal jigsaw blade designed for cutting thin metal, including sheet metal and light-gauge stock. At 3 5\/8 inches in blade length and ground to 21 teeth per inch (TPI), it delivers fine, controlled cuts where wood-cutting blades would skip or tear. The higher TPI count engages more cutting edges per stroke, reducing burring and improving cut quality on ferrous and non-ferrous sheet materials. This blade accepts a T shank, the industry-standard quick-change mount found on most modern jigsaws. Sold in a 3-pack, making it a practical carry stock for service vans and job boxes.\u003c\/p\u003e\n\u003cp\u003eThis blade is suited for trade applications where thin metal must be cut on-site without dedicated metal-cutting power tools. Electricians trimming electrical enclosures, HVAC techs cutting sheet metal panels, and plumbers working with light-gauge flashing or strapping will find the 21 TPI geometry appropriate for the task. The bi-metal construction resists heat and flex fatigue better than high-carbon steel blades, extending usable life in repetitive cutting scenarios.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21 TPI bi-metal construction for clean cuts in thin metal and sheet stock\u003c\/li\u003e\n  \u003cli\u003e3 5\/8 inch blade length suits standard-depth sheet metal and light-gauge material\u003c\/li\u003e\n  \u003cli\u003eT shank mount for tool-free blade changes on compatible jigsaws\u003c\/li\u003e\n  \u003cli\u003eBi-metal composition resists heat buildup and flex fatigue during extended use\u003c\/li\u003e\n  \u003cli\u003e3-pack quantity reduces mid-job downtime on multi-cut applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with T-shank-compatible jigsaws. The T shank is the standard fitment across a wide range of professional and prosumer jigsaw models. Verify your jigsaw accepts T shank blades before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eBlade changes should be performed with the jigsaw unplugged or the battery removed. Insert the T shank fully into the blade clamp until it seats and locks. When cutting metal, use a slower orbital setting and apply light, consistent forward pressure to avoid blade deflection. Eye protection and gloves are recommended when handling and installing metal-cutting blades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch (TPI)\u003c\/strong\u003e: 21\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Length\u003c\/strong\u003e: 3 5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Material\u003c\/strong\u003e: Bi-Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: T Shank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Thin Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity\u003c\/strong\u003e: 3 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShipping Weight\u003c\/strong\u003e: 0.04 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: BOSCH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: t121af3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BOSCH","offers":[{"title":"Default Title","offer_id":51524724293938,"sku":"T121AF3","price":18.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3c7ec396401cbdeb0c38752aa9495166.jpg?v=1785456475","url":"https:\/\/voomisupply.com\/products\/bosch-t121af3-bi-metal-jigsaw-blade-21-tpi-t-shank-3-pack","provider":"Voomi Supply","version":"1.0","type":"link"}