Item No.: H11A515
.Features :  
.Chrome vanadium steel construction, Internally by 54 Alloy steel hardness pole constituted Fits standard 1/4 to 3/4-inch and metric 7-19mm nuts and bolt heads.  
." Comes with a 3/8"" power drill adapter, turn your drill to socket driver."  
.Self-adjusts to fit grasp the hex, nut, eye, hook etc.makes your work easier.  
   
.Specifications :  
.Compatible Fastener Range： 1/4" - 3/4"