This wrench kit includes three wrenches and a clothespin. The wrench sets have three 7/16 wrenches for hydraulic lifters. They are thin enough to fit those thin nuts but strong to get everything tight. The box end on one of the wrenches is sized to fit a super E floatbowl plug. With the tapered end you can pry the pushrod retaining clips off. Made out of stainless steel in Ohio, with a US made clothespin!