KARAM CHUCKS has a very vide range of Independent Chucks also called as Dog Chucks. A chuck with jaws that open and close independently. Independent chucks can be adjusted to accommodate irregularly shaped workpieces. They are used to clamp ODD items Square in Shape, Dog Chucks normally have 4 Screws Operated Independently. This Chuck are Manual Hand Opearated Chucks. They have very strong Grip to hold heavy components too.