The Irwin 1988932 Hold Down Jig Clamp Accessory, designed to convert one-handed bar clamps into a table clamp The new Irwin Quick-Grip One-Handed Bar Clamps are designed to be compatible with the new line of One-Handed Bar Clamp Accessories. This hold-down jig clamp fits the newly designed clamps and previous generation quick-grip. It is designed to convert one-handed bar clamps into a table clamp. Features: Converts One-Handed Bar Clamp into table clamp Fits the newly designed clamps and previous generation quick-grip Specification: Quick Grip: Accessory