Kv 8400 Series Full Extension Precision Ball Bearing Slides With 1" Overtravel 12" 100# Class (Set) 100# Load Rating, Side mounted, Slide height - 1-13/16", Side clearance - 1/2" + 1/32" - 2 Steel ball bearing (3 bearings per inch of race). Exceptionally smooth and quiet. High quality slide Full 32mm hole pattern, Non-handed, Easy disconnect Optional Rear Mounting Bracket, Search: KV Rear Mounting Bracket Anochrome Optional Face Frame bracket, Search: KV Face Frame Mounting Bracket