Pre-bonded hair is all 100% human hair, silky,soft.
 It can be applied with heat iron connectors or micro ring(extension tube)and the keratin can last several months,like the natural hair you own,tangle free.
 Types: U tip,I tip hair,Nail hair and stick hair. 
Lengths: varying form 10 inches throught 28 inches and colors. 
The tools are :hair connector,micro rings,plier,glue gun,heat pot and so so