Large Snap Ring Pliers

snap ring
A circlip (a combination of 'circle' and 'clip', and pronounced thus), also known as a snap ring or Jesus clip, is a type of fastener consisting of a semi-flexible metal ring with open ends which can be snapped into place, into a machined groove on a dowel pin or other part to permit rotation
A removable ring used to axially position a bearing or outer ring in a housing. Also used as a means of fastening a shield or seal in a bearing.
carabiner: an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes

pliers
Pincers with parallel, flat, and typically serrated surfaces, used chiefly for gripping small objects or bending wire
a gripping hand tool with two hinged arms and (usually) serrated jaws
(plier) someone who plies a trade
Pliers are a hand tool used to hold objects firmly, for cutting, bending, or physical compression. Generally, pliers consist of a pair of metal first-class levers joined at a fulcrum positioned closer to one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on

large
Of considerable or relatively great size, extent, or capacity
at a distance, wide of something (as of a mark)
Pursuing an occupation or commercial activity on a significant scale
a garment size for a large person
above average in size or number or quantity or magnitude or extent; "a large city"; "set out for the big city"; "a large sum"; "a big (or large) barn"; "a large family"; "big businesses"; "a big expenditure"; "a large number of newspapers"; "a big group of scientists"; "large areas of the world"
Of greater size than the ordinary, esp. with reference to a size of clothing or to the size of a packaged commodity