The Swiders of Ukrainian Polissya used mainly local raw materials. The final preparation of pre-core for usage was forming the platform and the working surface. The main Swiderian type of core of Ukrainian Polissya is double opposite platform cores with one working surface. A typical form of Swiderian pressure cores of Ukrainian Polissya is cone-shaped and pencil-shaped. Microblades were made to be inserts into arrowheads of organic material. The joining of organic and stone elements for producing narrow-slot points is not traditional for Swiderian technology in Ukrainian Polissya. The technology, which fuses organic materials with stone elements for producing narrow-slot points, is typical of Steppe cultures. This tradition is from Kukrek Culture.