Tru-maxx CD-4 Steel Core Bit 3.5 in 13 in Drilling Depth

Product Description

The TRU-MAXX CD-4 is a steel core bit designed for contractors and tradespeople who need reliable, consistent performance in core drilling applications. With a 3.5-inch diameter and a maximum drilling depth of 13 inches, this bit handles typical through-wall and slab penetrations commonly encountered in plumbing, HVAC, and electrical rough-in work. The steel construction provides the rigidity needed to maintain a clean, round bore through concrete block, brick, and similar masonry substrates. At 1 pound, the CD-4 is a manageable single-operator tool that integrates with standard core drill rigs used on residential and light commercial jobsites.

This core bit is suited for applications where a 3.5-inch diameter penetration is required, such as running duct sleeves, conduit, or pipe through masonry or concrete walls and floors. It is appropriate for residential and light commercial construction and renovation work where tradespeople need a dependable bit for infrequent to moderate drilling cycles. The 13-inch maximum drilling depth accommodates standard wall thicknesses found in most residential and commercial construction.

Key Features

• 3.5-inch diameter for standard duct, conduit, and pipe sleeve penetrations
• 13-inch maximum drilling depth handles typical wall and slab thicknesses
• Steel core construction provides rigidity and consistent bore geometry
• Lightweight at 1 pound for single-operator handling
• Sold individually with a minimum order quantity of 1

Compatibility

Designed as an OEM-style replacement or standard-use core bit for use with compatible core drill rigs accepting a 3.5-inch steel core bit configuration.

Installation Notes

Core drilling should be performed by a qualified tradesperson following applicable local codes and jobsite safety requirements. Always confirm there are no embedded utilities, rebar, or post-tension cables in the drilling path before beginning. Secure the drill rig properly and use appropriate water or vacuum dust-collection methods to manage debris. Power down the drill rig completely before changing or inspecting the core bit.