Biker Knuckle Duster Ring — .925 Sterling Silver, 20g SolidBikers, punk rockers, and streetwear collectors different scenes, same symbol. This sterling silver knuckle duster ring puts the four finger design on your hand in 20 grams of solid . 925 silver. The 28mm x 18mm face makes the design unmistakable at any distance. Wear This If If you ride The polished silver surface handles handlebar vibration and rain without corroding. Sterling silver won't react with leather gloves the way base metals do. And the