Simpson Wire Hole-Cleaning Brush Head for 1-3/8 in. Holes is a Simpson wire brush head engineered specifically for cleaning drilled holes prior to adhesive anchor installation. Designed for use with Simpson Strong-Tie SET-3G and AT-3G adhesives, this brush head enables thorough hole cleaning with fewer brush strokes at embedments up to 20 times the anchor diameter, helping ensure optimal adhesive bond performance and reliable anchor holding strength.

Key Features

• 1-3/8 in. brush head sized for 1-3/8 in. drilled holes - matches your hole diameter precisely, ensuring full contact with the hole wall for effective debris removal before adhesive anchor installation.
• Compatible with 1-1/4 in. anchor diameter or #10 rebar - correctly sized for the anchor rod or rebar you are installing, taking the guesswork out of selecting the right cleaning brush.
• Designed for use with SET-3G and AT-3G adhesives - works in direct coordination with these Simpson Strong-Tie adhesive systems to meet proper hole-cleaning requirements and support adhesive performance.
• Fewer brush strokes required at embedments up to 20 times the anchor diameter - saves time and effort on the job site without sacrificing hole cleanliness or adhesive bond quality.
• 5 in. useable brush length - provides meaningful reach into the drilled hole; total usable length can be extended by adding a compatible handle and optional extension, both sold separately.
• T-handle (model ETBS-TH) required and sold separately - gives you the flexibility to pair the brush head with the handle and extensions best suited to your specific embedment depth and job conditions.

Why This Product

• Built for adhesive anchor accuracy - cleaning drilled holes properly before adhesive anchor installation is critical to achieving full bond strength, and this brush head is purpose-built for exactly that application with SET-3G and AT-3G adhesive systems.
• Fewer strokes, faster prep - the brush head's design allows thorough cleaning at embedments up to 20 times the anchor diameter with fewer brush strokes, reducing labor time during hole preparation without cutting corners on cleanliness.
• Precise fit for the anchor rod or rebar being installed - sized specifically for a 1-1/4 in. anchor diameter or #10 rebar in a 1-3/8 in. hole, this brush head removes the risk of using an undersized or oversized brush that could leave debris behind or fail to contact the hole wall.
• Configurable system for varying embedment depths - because the brush head, T-handle, and extensions are each sold separately, you can assemble the right total usable length for each application rather than being locked into a one-size-fits-all tool.

Specifications

• MPN: ETB137S
• Brush Head Diameter: 1-3/8 in.
• Hole Diameter: 1-3/8 in.
• Anchor Diameter / Rebar Size: 1-1/4 in. / #10
• Useable Brush Length: 5 in.
• Material: Combination
• Packaging: Packs of 1 and Cartons of 25

Frequently Asked Questions

Which adhesives is the ETB137S brush head compatible with?

The ETB137S wire brush head is designed for use with Simpson Strong-Tie SET-3G and AT-3G adhesives to permit proper hole cleaning prior to adhesive anchor installation.

What anchor diameter and rebar size is this brush head intended for?

This brush head is sized for a 1-1/4-in. anchor diameter or #10 rebar, used in a 1-3/8-in. drilled hole.

Is a T-handle included with the ETB137S?

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

What is the useable brush length of the ETB137S, and how is total usable length determined?

The ETB137S has a 5-in. useable brush length. To obtain the total usable length, add the usable length of the brush, handle, and any optional extension used.

Related Products

• SET-3G
• AT-3G

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