Attachment kits are for added security of any hairpiece. Styles Sabrina and The Princess come with wood tool kits.
The 2 threader kits one plastic and one wooded handle 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 securely, if attached properly they will not come off. However-- If you have a large bun and its pushes on the hairpiece or you have a small bun not filling out the hairpiece or just feel like you want to make sure the piece will never come off ,the security tools and or sew kits are great.