TAPERED ADJUSTABLE GIBS; IF ONLY ONE DIRECTION OF TRAVEL IS REQUIRED; TABLE HEIGHT MAY BE REDUCED BY REMOVING LOWER CARRIAGE AND MOUNTING THE UPPER SLIDE DIRECTLY ON THE BASE ASSEMBLY; FEED TRAVEL 16.000 IN.; CROSS FEED TRAVEL 3.375 IN.; SHIPPING WEIGHT 82 POUNDS; END ITEM IS NSN 3460-00-540-1824