Available in D or B91 (#170/200), D or B181 (#80/100). For Diamond please indicate 2 at the t. no. (exp.2909BH=Diamond) 6909BH=CBN Other grit sizes are available upon request. Remarks:Minimum clamping length = Half of total length: Le=0.5xL. Tolerance: D= ±0.006, H1= ±0.040, H2= ±0.040, Y= h6, L= ±0.040. print version created by tarrlink