Material of storage case: Heavy gauge steel which is durable and can withstand impact force 
Material of tools: Chrome vanadium steel 
Added durability and long-lasting use 
Contains the following: 
1/2" Dr 12pt socket 
1x Ratchet Handle - 250 mm
2x Extension bars - 75, 250 mm
1x Sliding T-handle - 250 mm
1x Universal Joint - 72 mm
Pictorial diagram on the lid of the box (as shown above) shows clearly the different components in the box for user convenience