50mm Width Osgr10 with 85mm Width Osgb10n-4wheels for Jewelry Showcase. High Precision Motion: Achieves high precision linear motion using rolling elements between rail and block. Low Friction Performance: Features low friction for quiet and smooth running operation. Multiple Block Types: Available in flange, slim, seal, standard, double bearing, and short types. High Load Capacity Options: Offers standard and ultra-high load capacity blocks with varying lengths. Customization Service: Provides custom service for rail and block sets with specific structure options. Versatile Applications: Suitable for warehouse, shipboard, goods yard, building, and workshop cranes. Durable Aluminum Material: Constructed with high-quality aluminum for reliable performance. ISO 9001 Certified: Manufacturing process certified under ISO 9001:2000 standards.