Kv 8400 Series Full Extension Precision Ball Bearing Stay Close Slides 20" 100# Class (Set) Load rating: 100# Mounting: side. Side clearance: .532" + .032" - 0" each side. Height: 1-13/16". Non-handed 32mm and traditional hole pattern Three ball bearings per inch and polymer stop cushions for smooth quiet operation Looking for a different size? Search: KV 8400 Series Full Extension Precision