It is suitable for wall substrates Solid concrete walls Solid brick, red brick. These hammer drive anchors mean business. At 1/4" x 1-1/2", they bite into concrete, solid brick, or red brick like nobody's business-perfect for cabinets... This allows for more material to be removed from the substrate. QWORK Hammer Drive Anchors - 1/4 X 1-1/2 Inch, 200-Piece Box Fasteners cannot be removed after installation, very secure. Anchors meet or exceed GSA specification A-A-1925A Type 1. Permanently Fixed: Fasteners cannot be removed after installation, very secure. Design: Anchor diameter equal to hole diameter. Fits: Suitable for wall substrates Solid concrete walls Solid brick, red brick. Application: Used to install wall cabinets, security windows, wall panels, curtains etc. Taquetes De Expansion 1/4" These expansion nails feature a drive nail, available in carbon steel, ensuring secure and tamper-resistant installation. Our drive rivets are available...