1·Cottonwood, maple, pinewood, trimmed log or heart wood of clamp-shaft remained.
杨木，枫木，松木，修直以后的原木或有卡剩下的木芯。
2·Cottonwood, maple, pinewood, birch, miscellaneous tree, trimmed log or heart wood of clamp - shaft remained.
杨木，枫木，松木，榆木，杂木，修直以后的原木或有卡剩下的木芯。