This cast aluminum evolved from a stock removal knuckle I created with an eye to rounded, ergonomic smoothness. I prefer a minimum of finger separating stalls, and this knuckleduster hits that mark with only one skinny post between middle and ring finger enabling a comfortable closed fist. The stalls are big! I can even get the piece onto a gloved hand - not every gloved hand would fit but mine did. Big stalls make it easy to get on and off in a hurry. It is a big piece overall - 4.5" wide - but the alloy makes it super light and easy to carry at 125 grams. The palm swell is almost 3/4" wide and fills the hand nicely, enhancing the grip. Skulls for decoration. I left it a little rough to highlight the cast nature and I like the crustiness of it.