The adjustable wrench is multi-purpose as it has 2 reversible drive sockets and a third for other inserts The two reversible sockets measure 17 mm, 19 mm, 21 mm and 23 mm. The 3rd drive socket takes 1/2" inserts The soft grip extends from 355 mm to 540 mm to provide extra leverage for freeing tight wheel nuts Strong, durable and small enough to fit in the trunk