ASDA Jigmaster Models YBM-50J-S, YBM-80J and YBM-80JR. Catalogue. YASDA Jigmaster Models YBM-50J-S, YBM-80J and YBM-80JR. Detailed Sales and Technical Specification Catalogue. 16 pages. Manufacturers: Yasda Models: YBM-50J-S YBM-80J YBM-80JR Contents: Catalog