1. 11Piece Tool Kit with Carrying Case – Pliers, Drive Handle, Sockets, Adapters to pull old valve seals and install seals on overhead camshaft engines. 2. This 11 pcs valve seal remover and installer kit is made of alloy steel for strength and durability, which is a unique steel with extreme antiwear properties. 3. Precision machined seal driving adapters guide the seal for proper setting; Valve pliers includes a 6' (15.2cm) handle and is 10.5' (26.7cm) long overall to reach narrow spaces; Pliers jaws are serrated for extra grip and has a 5.5' (14cm) maximum jaw opening; Knurled ends on 2' (5.1cm) adapters for tapping down the seal and 6' (15.2cm) handles to provide extra grip; 3.5' (8.9cm) deep sockets for seals O.D. 10.8mm to 14.8mm 4. Home use, Car maintenance, Automotive Tools. It is suitable for 5, 5.5, 6, 6.5, 7, 8, 3/8 inch seals, and these 2 deep seal driving sockets are for seals with 10.8 14.8mm diameter.