6 point size: 1/4",5/16", 3/8", 7/16", 1/2", 9/16" 
12 point size: 5/8", 11/16", 3/4", 13/16", 7/8", 15/16". 
Flexible head folds up to 230 degrees. 
Traditional flare nut wrench and crowfoot function. 
Combine use with F-bar, H-bar, T-bar, speed-handle...etc. 
Use a flexible crowfoot wrench in hard-to-reach areas at up to 110 degrees.  
They're made from a chrome vanadium steel