The Riser is for those tyers that would like to adjust the height of their vise using either a Pedestal Base or the PEAK clamp. The all brass body allows the adjustment you need when the table or chair height does not match your needs. A brass tipped set screw, using the same 1/8" Allen wrench used on the PEAK pedestal base and Clamp, is used to securely clamp any standard 3/8" riser while the lower portion can be clamped in your standard 3/8" hole in a pedestal base.
This is a great accessory when you do not get to choose the table height at your hotel or on river tying site. The picture on the left shows the riser on the PEAK Clamp with the optional Accessory Shaft in the second Clamp hole. The Riser will give you the adjustment you need when the table height is lower than expected.