Size: 120 mmx120mm Length: 9 metres and less Packing : In bundles (bulk) Tolerance: Size: +/ 4mm Length: +/100 Diagonal difference: 10 mm max Twist: 1 degree: 10 mm max Straightness: 20 mn/ metre max, 2 pieces of total length max Surface Condition: Free of cracks overlaps, and both ends shall be free of shrinkable holes.