Ice Lugs
Ice lugs (also known as “corks" or ice cleats) are short, durable pieces of steel that are attached to the track pads of heavy machinery like excavators and bulldozers to dramatically increase traction and stability in icy, snowy, or frozen conditions.
The primary function of ice lugs is to provide grip on hard, slippery surfaces where the standard, flatter track pads (grousers) would simply slide, which is a major safety hazard in cold climates. They act like the cleats on an athlete's shoe or snowmobile tracks, digging into the ice and compacted snow to prevent the machine from sliding forward or sideways, especially on slopes. Traditionally, ice lugs are short pieces of high-grade steel (often boron alloy for superior weldability) that are welded onto the existing grouser bar of the track shoe in a specific, staggered pattern.