Attachment kits are for added security of any hairpiece. Basic attachment Youtube Video
The 2 threader kits one plastic and one wooded handel both do the same thing. The wood handle unit is longer and may be better for the bigger pieces. We have the sew kits that you can use to do a simple stitch or use as you do with the Security tool kits.
All Hairpieces are designed to attach security most do not need a tool kit. If you have a lot of hair or not much hair or just feel like you want to make sure the piece will never come off the security kits and sew kits are great.