This holder is essential as it holds the blades straight and stiffens them. This improves the cutting, it prolongs the life of the blade and prevents any possible injury by keeping fingers away from the sharp edges of the blade.
The set contains one holder and two screws+nuts, which are all made entirely from stainless steel.
The set does not include the knife handle. Fits all #1 type handles (Xacto, Pro Edge, Excel)