This valve stem seal removal/installation set is suitable for both professionals and DIY users. The removal/installation plier has a long handle design, making it possible to reach down the seal stem to the confined areas. The inside grooves on the tips and the serrations in the jaw ensure an easy and firm grip. The knurled ends of the handle also give you the maximum grasp, so no worries of slipping off in oily conditions. The precision machined driving handle ensures the proper setting of each seal. The other driving sockets and adapters will offer useful aid on the removal and installation of valve stem oil seals on the multi-valve engines. All the 11 pieces of tool kits included are made of quality carbon steel. Delivery includes 1 x Valve Stem Seal Plier, 1 x Driving Handle, 2 x Deep Seal Driving Sockets, and 7 x Seal Adapters, all in a blow-molded case for protection and easy transportation.