... :30,40,60mm 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>Galvanized tree protector Features: High strength and ... . NoItemDescription1Bearing bar25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, 30.16 ... 1/4", 1 1/2"x 1/4" etc.3Cross bar pitch40,45,50,76,100,101.6mm etc4MaterialASTM A36,A1011 ...