Handle material aluminum alloy aluminum Connecting rod diameter 6mm 6mm Chuck holding range 0.3-4mm 0.6-6mm For the maximum speed of 10000 rev / min 10000 rev / min Grip diameter 26mm 26mm maximum diameter (28mm) Flexible shaft length 110cm 110cm Recommended for use chuck chuck, for fine carving, especially suitable for jade processing (jade processing to add water, the general fear of water mill, but the shaft is not afraid of water)