Bench Clamp Base For Bench Dog HolesBring the clamping versatility of Kreg Bench Clamps to any work surface with the Bench Clamp Base. Its a perfect companion to the Mobile Project Center, and it allows you to get more from any work surface with 34" or 20mm bench dog holes. Features: Use on almost any work surface that has 34" or 20mm bench dog holes Works with any Kreg Bench Clamp with 5 16 button head anchor Aluminum base and heavy duty anchor bolt hold up to rugged use Base can