Slides are supplied as single units. Accuride Linear Slides 0115RS Series. Horizontal loading per pair of slides evenly distributed: 60kg Vertical loading per pair of slides evenly distributed: 50kg 10000 cycles Precision linear motion through the full travel Moving member fully supported on ball bearings at all times Retainer synchronization Can be used upright as a non-load bearing guide Fixing recommended M5 screws (not supplied) Materials: Cold rolled mild steel runners; cold rolled Zinc plated steel ball retainers; Carbon Chrome steel ball bearings