Check the listing for details. AD-EZ #AP19 Adjustable Precision Parallel Set-up Block. Condition: New. Listed at 47.50 USD. BACK IN STOCK. Item listed is an AD-EZ"Adjustment Easy" Precision Adjustable Setup Parallel Block PT#AP65.The Height can be adjusted from .88" to 1.06" with the use of a 5/32Allen wrench. Top and bottom of blocks are flat and parallel within .002 andhave a Black Oxide finish. These are made of non-hardened 1018 steel and canhold 475 lbs for screw adjustment and a can take 850 lbs of clamping pressure.These are very popular on vertical, horizontal mills, vert. boring mills, inspection, welding and assembly alignment. When you are making parts with various heights, bent or warped parts or just need support without having to make a special block, these are the answer. NO MORE SHIMS WITH A PRY-BAR or tall wobbly jacks. The width is 1.5" and the depth is 1.00". Most of the guys who use these put a brass shim on the mating face to protect the top face. SAVES A TON OF TIME AND AGGRAVATION. These are manufactured by ATLAST Machine Solutions. Intercontinental Shipping only.