[Specifications] ●Diameter (mm): 8 ●Standard length (m): 30 ●Hardness: 35±5° This product will be delivered to the length specified in the "Quantity column". The "Standard length" is the upper limit of the length of one piece.如果 订购的多于“标准长度”, 将以“标准长度 +剪切项目”的形式交付。