Knape Vogt Kv8405 B12 Ano 12 In. Full Extension With Overtravel Ball Bearing Slide - Anochrome Side height: 1-13/16. Side clearance: 1/2 + 1/32 - 0. Full extension plus 1 overtravel. Steel ball bearing (Three bearings per inch of race. Exceptionally smooth and quiet. A very high quality Full 32mm hole pattern.