The "Pistol Grip" Voodoo knob is a classic Voodoo shape revived for a limited time. It is 1 3/8" diameter at it's widest (near the top), tapering to about 7/8" diameter at it's base. The knob measures 3" tall, but the thread is recessed 1" so it meets perfectly with the top of the boot, and still reduces the throw between gears. VK-60