Husqvarna Diamond Core Drill Bit 589687701 7/8 Inch BannerLine (24 Inch Tube 5/8-11 Thread Laser Welded Reinforced Concrete Masonry Wet)

Husqvarna 589687701 7/8 Inch x 24 Inch BannerLine Vari-Drill Diamond Core Bit

The Husqvarna 589687701 is a 7/8-inch diameter wet diamond core drill bit engineered to execute continuous deep utility penetrations through reinforced concrete, masonry, brick, block, and stone. Built with an extended 24-inch thin-wall alloy steel tube, this BannerLine Vari-Drill series bit incorporates laser-welded diamond segments with a 1/5-inch total segment height to accelerate bit tracking and reduce operational chatter. Fitted with a standard 5/8-inch - 11 threaded spindle connection, it integrates directly with handheld or rig-mounted core motors to deliver straight, rapid deep-hole coring without using barrel extension rods.

Best Used For:

• Small Utility Line & Conduit Coring: Boring precise 7/8-inch clearance holes through thick concrete foundation walls and floor slabs for electrical wiring, small plumbing lines, and anchor sleeves.
• Reinforced Concrete & Masonry Penetration: Drilling cleanly through structural concrete containing light-to-medium steel rebar mesh, cinder block, brick, granite, and marble.
• Deep Foundation Sampling & Drilling: Executing continuous 24-inch deep core extraction passes in thick structural footings and masonry walls in a single setup.

Key Performance & Safety Features

• Extended 24-Inch Core Barrel Depth: Deep-reach barrel capacity allows full 2-foot drilling depth in one pass, eliminating vibration and downtime from extension rods.
• Laser-Welded Segment Attachment: High-strength laser welding joins diamond cutting segments directly to the alloy steel tube to prevent segment loss under high torque.
• Thin-Wall Alloy Steel Tube: Lightweight barrel design minimizes rotation resistance, lowers motor load, and reduces operator fatigue during handheld coring.
• Balanced Vari-Drill Matrix Bond: Optimized diamond matrix formulation maintains rapid linear drilling speeds and even wear across general construction substrates.
• Standard 5/8"-11 Threaded Hub: Universal female threaded spindle mount ensures direct fitment on small handheld core drills and drill stands.
• Wet-Only Coolant Circulation: Formulated for continuous water feed to flush slurry, suppress jobsite dust, and maintain cool segment temperatures.

What's Included

• (1) Husqvarna 589687701 7/8" x 24" BannerLine Vari-Drill Core Bit

Technical Specifications

Pro-Tip: When wet coring small 7/8-inch diameter holes to a 24-inch depth, maintain steady water pressure to continuously flush slurry out of the narrow annulus, preventing core binding and thermal stress on the barrel.