An apparatus for securing a workpiece comprising first and second clamp members, and a transportable elongate member to which the clamp members are mounted and are operable for being shifted between work engaging and work releasing positions. In one form, the apparatus may be configured with clamp members capable of being fully removed from the elongate member and placed back thereon while maintaining the operability of the clamp members. At least one of the clamp members may be capable of being mounted on the elongate member in a plurality of directions, or may include jaw assemblies which are removable from and/or rotatable with respect to the elongate member. In addition, the apparatus may include a base for securing the base to a work surface and a catch for securing the elongate member to the base. In another form, the base may be configured to receive and secure the elongate member in a plurality of directions.