Jobber Drill Bit 1/2" x 5" L Multi-Material, Carbide - Irwin 1792771 (4-Pack) The Irwin 1792771 1/2-inch jobber-length drill bit is a high-performance, multi-material carbide-tipped bit engineered to drill through brick, block, tile, metal, wood, plastic, and marble with consistent accuracy. Featuring a unique diamond-ground, four-facet point design, it delivers aggressive, self-centering penetration while minimizing walking and chatter on hard or abrasive surfaces. The double-milled flute efficiently removes debris during drilling, reducing heat buildup and extending tool life. With a 5-inch overall length and 4-inch cutting length, it provides ample reach for deep holes in thick materials, while the 1/2-inch straight shank ensures secure grip in standard chucks. Bright finish resists corrosion and allows for easy inspection of wear. Features - Carbide tip with diamond-ground four-facet point for aggressive, self-centering drilling - Double-milled flute design enhances chip evacuation and reduces friction and heat - 1/2 in diameter delivers large-hole capacity for plumbing, electrical, and structural applications - Jobber length (5 in overall) provides extended reach for deep holes in thick materials - Straight 1/2 in shank ensures secure, vibration-free grip in all standard drill chucks - Compatible with wood, metal, brick, concrete block, ceramic tile, marble, and plastic - Bright finish resists rust and enables clear visual inspection of cutting edge - Precision-ground for consistent hole size and smooth finish - Designed for use in corded and cordless drills with sufficient torque - No cobalt or hazardous materials ? meets RoHS environmental standards - Carded packaging for organized retail display and individual unit tracking - Replaces multiple specialized bits with one durable, all-purpose solution Specifications - Brand Name: Irwin - Model Name: Irwin 1792771 - Product Type: Drill Bit - Material: Carbide - Diameter: 1/2 in - Overall Length: 5 in - Flute Length: 4 in - Shank Diameter: 1/2 in - Shank Type: Straight - Point Type: Four-Facet - Cutting Direction: Right Hand - Finish: Bright - Style: Jobber Length - Weight: 0.18 lb per bit - Quantity: 4 pcs per pack - Packaging: Carded - Country of Origin: United States - Nomenclature: 1792771 DRILL BIT 1/2IN - UPC: 044893179277 - GTIN: 00044893179277 - Manufacturer: Irwin Tools Product Application The Irwin 1792771 1/2-inch jobber drill bit is used by professional contractors, electricians, plumbers, and serious DIYers who require a single, reliable bit for drilling large holes across diverse materials ? from concrete block and tile to steel studs and hardwood framing. Ideal for installing conduit, plumbing sleeves, anchor bolts, or lag shields, it eliminates the need to switch between multiple bits, reducing downtime and tool clutter on the job site. Its four-facet point and double-flute design ensure clean, accurate holes even in brittle or abrasive surfaces, making it indispensable for renovation, new construction, and industrial maintenance tasks. Professionals rely on its durability and consistent performance to deliver precision every time ? delivering the confidence of a single tool that handles the toughest drilling challenges without compromise.