0.6-1cm black and white elastic ordinary model (that is, thin model), a 25kg, the meter number per catty 0.6cm is 195 meters, 0.8cm is 145 meters, 1cm is 112 meters. After the default of less than 25 catties according to 1 piece of 25 catties, insufficient need to make up the difference. If only part, please contact customer service. The default product is carton bulk multiple or single head, if you need another packing method, please contact customer service for communication, to avoid misunderstandings.