Heavy-duty anchor for flush mount applications in concrete or masonry. Preassembled, just drill hole to depth equal to anchor length and set anchor. No. 372082: Anchor Diameter: 3/8", Head Type: Non-Flange No. 372083: Anchor Diameter: 1/2", Head Type: Non-Flange ---- 1. This product has a problem. Please dont worry. 2. Product warranty and other products made in Japan are not applicable. 3. Packaging and instructions are in English.