These are machined brushed Aluminum SAE lugs designed to bolt directly into the Ohmmu Model S battery (or any battery with similar internally threaded connection). These are needed for May 2019 and later built Model S vehicles as the factory no longer includes the adapters and now sources the Model S battery with lugs on the battery themselves. Price is for a set of two, one positive and one negative. The larger is for the positive terminal while the smaller is for the negative.
Model S to SAE lug adapters (needed for May-2019 and later vehicles)