Samorez 3.9x16 (YSB) Wunder YSB 3.9x16 MUV - is a self-evucinant screw showing high strength and durability. This model with 3.9 mm diameter and 16 mm is ideal for combining metal, plastic and wooden surfaces. The protective cover provides additional protection against storage, and the harsh end allows you to quickly and without problems. Among the fields of application, construction, installation work, furniture and other household and industrial goals. This is an ideal choice for work that requires samorez, accuracy and solid fastening of Wunder quality.