The D-Arm is a handy horizontal extension that can be added to any standard rotary fly tying vise with a 1/4" diameter handle. An included 5/32" Allen wrench allows you to position the D-Arm at the desired height and secure it to the existing handle.
The photo to the left shows the D-Arm attached to the PEAK Rotary Vise handle. A happy customer, Sid D., brought this great idea to our attention so his name will be forever attached to this handy device.