Graco SSP 164 INSERT,SLIDER 12mm power and because they are The quality of the power and because they are exceptionally easy to use they set themselves apart from all others 006 Spindle Travel 5" Head Movement 90° R & L 45° F & B Max Distance Spindle to Table 18 3 4" Distance Spindle to Column 21 2 5" Distance Spindle to Column 6 1 2" Collet Capacity 1 8" 7 8" Table Longitudinal Travel 36" Table Cross Travel 12" T Slots Number and Size 3" and 5 8" T Slot Centers 2 1 2" Work Table Weight Capacity 550 lbs Travel of Knee 16" It is the insert component used within the slider assembly of the pump's clamping mechanism listed as Ref