All parts are well packed and assorted in a box for storage and carry, meeting your different needs for all kinds of repair work Knurled sockets provide a secure hold, precise bits to accurate size Manufactured from chrome-vanadium steel with heat treated for extra strength and durability Each bit has its size imprinted on the bit itself, making it easy to identify after you ' ve removed a handful from the for case 29 pieces star bit sockets set with 1 / 4, 3 / 8, 1 / 2 inch drive This Star Bit is a useful tool kit for automobile repair and maintenance, Manufacturer: Kaeltsyn