NO LEDGE - GRADE AA LABORATORY
Meets or exceeds U.S. Federal Specification GGG-P-463C for flatness
Great surface hardness and wear resistance - the highest percentage of quartz crystals of any granite plate
Smooth, jewel-like quartz bearing points protect accuracy and finish of both the surface and the tools used on it
Quality and economy combined
Comparable to black granite plates while outwearing them as much as 5 to 1
Meets or exceeds 50 lbs. per square foot (24 kg per 1,000 sq. cm) load bearing specifications. Available in 100 lb. (45 kg) test series