The castle nut socket are all manufactured from medium carbon steel that has been heat treated then chrome plated. This gives the sockets terrific hardness and tensile strength and assures a long and useful life.
Swinging arm tool
Manufactured from medium carbon steel /heat treated and chrome plated
Square drive size : 1/2"
Dimensions: External 43mm, Internal 34mm, Lugs 7mm x 5.5mm x 4