material is birch wood .common size is as follow Length           114mm/93mm                    (+/- 1mm)Width             9.5mm                              (+0.3 / -0.2mm)Thickness       2mm                                 (+/-0.15mm)round edge and straight edge are both OK .and common packing  , 50pcs/bundle, 200bundles/ctn, 10000pcs/ctn  or in bulk  10000pcs