Husqvarna Diamond Core Drill Bit 595934205 4-1/4 Inch Vari-Drill B10 (24 Inch Tube 1-1/4-7 Thread Laser Welded Reinforced Concrete Masonry Wet)

Husqvarna 595934205 4-1/4 Inch x 24 Inch B10 Vari-Drill Diamond Core Bit

The Husqvarna 595934205 is a 4-1/4-inch overall diameter wet diamond core drill bit engineered to execute continuous deep utility penetrations through hard reinforced concrete, rebar-embedded bridge decks, and heavy masonry walls. Built with an extended 24-inch steel core barrel, this Silver-level B10 Vari-Drill series tool incorporates 10 Z-Edge roof-top laser-welded diamond segments with a 2/5-inch segment height to facilitate instant bit tracking and smooth, chatter-free entry. Equipped with a standard 1-1/4-inch - 7 threaded hub connection, it operates efficiently under continuous water cooling with core drill rig motors rated between 2 HP and 5 HP, delivering straight core extractions for large conduit runs, heavy piping, and structural anchors without barrel extensions.

Best Used For:

• Over-Sized Utility & Conduit Line Penetrations: Boring precise 4-1/4-inch clearance openings through thick concrete foundation walls and floor slabs for commercial utility lines, large drainage pipes, and sleeve mounts.
• Steel-Reinforced Concrete & Bridge Deck Coring: Penetrating heavy steel rebar mesh and hard-cured aggregate concrete containing granite, flint, and limestone without segment shear.
• Deep Wall & Foundation Penetrations: Completing continuous 24-inch deep core extraction passes in structural masonry and retaining walls in a single setup.

Key Performance & Safety Features

• Extended 24-Inch Core Barrel Depth: Deep-reach barrel capacity eliminates the need for bit extension rods during thick wall and slab coring operations.
• 10 Laser-Welded Diamond Segments: High-integrity laser welding joins diamond cutting segments directly to the steel tube for maximum safety under high torque.
• Z-Edge Roof-Top Segment Contour: Specialized segment shape reduces initial friction and vibration to ensure rapid, precise hole starts.
• 2/5-Inch Segment Height Matrix: Generous matrix height paired with industrial diamonds delivers elevated cutting speed and extended wear resistance.
• Standard 1-1/4"-7 Threaded Hub: Universal female thread connection fits directly onto standard commercial core drilling rig spindles.
• Wet-Only Coolant Circulation: Designed for continuous water flow to flush slurry, prevent bit binding, and maintain cool segment temperatures.

What's Included

• (1) Husqvarna 595934205 4-1/4" x 24" B10 Vari-Drill Diamond Core Bit

Technical Specifications

Pro-Tip: Maintain constant water pressure when wet coring 4-1/4-inch penetrations through thick concrete walls to flush slurry out of the 24-inch barrel, preventing slurry packing and bit seizure.