Simpson Strong-Tie ETBS wire hole cleaning brushes are excellent for cleaning drilled holes before installing adhesive anchors. This brush head is designed for use with the Simpson SET-3G™ adhesive. It allows for proper hole cleaning with a few brush strokes at embedments up to 20 times the anchor diameter. This product includes only the brush head. T-handles, extensions, and brushes are sold separately. The T-handle is required for use with all sizes of the standard wire brush. To obtain the total usable length, add the usable length for each part used.