Features: 
Fast, convenient, disassemble screws, tacks. 
And speed can be changed in the opposite direction of rotation of the drill in conjunction. 
1Set (4Pcs) headed remove the screw breakage, also known as double-headed screw extractor decapitated. 

Uses: special tools for removing the wood in the head has been broken wood screws, stud in to give a head wood screws drilled, easy to use to take another head screws. 

Specification: 
100% Brand new and high quality. 
Material: Alloy Steel + Plastic Box. 
Color: As shown. 
Specifications: 1#，2#，3#，4#. 
1#-3# Size: 1.97*0.19inch 
4# Size: 1.97*0.31inch 
Box Size: 3.35*2.36*0.59inch 
Conversion: 1inch=2.54cm, 1cm=0.393inches 

Package Included: 
4 PCS x Screw Extractor Drill Bits

Warm Tip : 
Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. 
Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated.