Steel smith offers vtc series, straight base medium duty clamps. The straight base series is identical to the vtc - flanged base series with the exception of the base design. For situations where a vertical surface is used to mount the clamp a straight base can be used. All the models are provided with stop pins. The clamping arm is available in three different options: model vtc-85150 sf/bs - has a solid hold down bar which has a fixed guide bush at its end for the spindle assembly; model vtc-4595 sb/bs - has a solid bar onto which the bolt retainer can be welded at any desired angle; and model vtc-85150 sf/bs - has a `u` bar arm which enables one or more spindles to be moved into any desired position along the arm.