uxcell Luggage Sliding Slides Ball Transfer Units Conveyor Roller 10 Pcs Product Features Product Specifications Shipping Weight: 14.4 ounces Why you Should Buy from Us? Trusted Seller, Great Feedback Quick Shipping and Tracking HUGE Discounts Excellent Returns Policy The BEST Customer Service Shipping & Returns We Ship Worldwide! 14 Day Money Back Return Policy Items Ship within 24-72 Hours Shipping process begins as soon as you order. We cannot cancel orders. Our goal is FAST delivery! Product Description Two-Hole, metal and Flange-mounted 16mm ball bearing resting on individual support bearings and is ideal for most industrial transfer applications.Ball transfer unit can also be used in a variety of non-industrial applications, including retail store displays and airport luggage transfers.Ball support cup is hardened and plated, protective cover assures low torque and longevity. Thank You For Your Business! Please note all electronic products are designed for U.S. electrical system. Other countries may need an adapter.