Kreg KBC3-SYS Bench Clamp System Includes 3" (76mm) Bench Clamp, Clamp Plate, and mounting hardware Anodized-aluminum plate mounts flush with work surface Clamp automatically adjusts to match material thickness 3" reach (76mm); clamps materials up to 33/4" thick (95mm) Clamp features an adjustment knob for built-in pressure control