The Simpson 1-1/8 in. Wire Hole-Cleaning Brush Head from Simpson is purpose-built for cleaning drilled holes before adhesive anchor installation. Sized precisely for 1-1/8 in. diameter holes, this brush head works with Simpson SET-3G and AT-3G adhesives to deliver thorough hole preparation with fewer brush strokes at embedments up to 20 times the anchor diameter - helping contractors achieve a clean, properly prepared hole for reliable anchor performance.

Key Features

• 1-1/8 in. brush head for 1-1/8 in. hole diameter - matches hole size exactly so the brush makes full contact with the bore wall, removing debris effectively without leaving gaps in coverage
• Compatible with 1-in. anchors and #8 rebar - covers two of the most common heavy-duty anchor and rebar sizes, giving structural and concrete contractors a single brush head for multiple applications
• 5-in. useable brush length - provides meaningful reach into the hole; total usable length can be extended by adding a handle and optional extension, adapting to varying embedment depths
• Engineered for use with SET-3G and AT-3G adhesives - designed specifically to meet the hole-cleaning requirements of these two adhesives, supporting proper adhesive bond development and code-compliant anchor installation
• Fewer brush strokes at embedments up to 20 times the anchor diameter - reduces the physical effort and time required for hole preparation, improving efficiency on high-volume anchor installation jobs
• Requires T-handle model ETBS-TH (sold separately) - the brush head attaches to a dedicated T-handle, keeping the tool system modular and allowing handles, brushes, and extensions to be replaced independently

Why This Product

• Fewer strokes, faster prep - this brush head is designed to clean drilled holes thoroughly in fewer passes at embedments up to 20 times the anchor diameter, reducing labor time and effort on anchor installation work without sacrificing cleaning quality
• Adhesive-specific compatibility you can count on - purpose-matched for Simpson SET-3G and AT-3G adhesives, this brush head supports the exact hole-cleaning process those products require, removing guesswork from a critical step in the installation sequence
• Right-sized for the anchor, not just the hole - the 1-1/8 in. brush head is matched to both the hole diameter and the anchor or rebar size it serves, so installers get a brush that fits the application precisely rather than one that approximates it
• Modular tool system for flexible use - because the brush head, T-handle, and any extension are separate components, worn or damaged parts can be replaced individually, lowering long-term cost on job sites where hole-cleaning brushes see heavy use

Specifications

• MPN: ETB112S
• Brush Head Size: 1-1/8 in.
• Hole Diameter: 1-1/8 in.
• Anchor Diameter / Rebar Size: 1 in., #8
• Useable Brush Length: 5 in.
• Material: Combination
• Packaging: Packs of 1 and Cartons of 25

Approved Applications

• Cleaning drilled holes prior to adhesive anchor installation
• For use with Simpson Strong-Tie SET-3G high-strength epoxy adhesive
• For use with Simpson Strong-Tie AT-3G high-strength hybrid acrylic adhesive
• Suitable for 1-in. diameter anchors and #8 rebar installations

Related Products

• SET-3G - Compatible high-strength epoxy adhesive for anchor installation
• AT-3G - Compatible high-strength hybrid acrylic adhesive for anchor installation

Frequently Asked Questions

What hole diameter is the ETB112S wire brush head designed for?

The ETB112S is designed for a 1-1/8-in. hole diameter, making it suitable for 1-in. anchors or #8 rebar installations.

Which adhesives is this wire brush head approved for use with?

This brush head is specifically designed for use with Simpson Strong-Tie SET-3G and AT-3G adhesives to permit proper hole cleaning with fewer brush strokes at embedments up to 20 times the anchor diameter.

Is a T-handle included with the ETB112S brush head?

No. A T-handle (model ETBS-TH) is required for use with all sizes of the standard wire brush but is sold separately. Extensions and additional brushes are also sold separately.

What is the useable brush length of the ETB112S?

The ETB112S has a 5-in. useable brush length. To obtain the total usable length of your cleaning assembly, add the usable length of the brush, handle, and any optional extension used together.

Note: Product dimensions and/or length may differ from picture. Please see the item description above for specifications.