5mm steel hoops
internal structure of the cerebrum
tip attachment and ejection forces help reduce the risk of Repetitive Stress Injury (RSI)
these vessels are durable
inexpensive and provides a new standard of precision and accuracy
Metal Cylinder Set 5mm steel hoopsMetal Cylinder Set B. Cylinder Set of 3 Kinds Metal, size Dia2x3cm, including Copper, Steel, Aluminum, Brass. C. Cylinder Set of 4 Kinds Metal, size Dia1x5cm, with knob, including Copper, Steel, Aluminum, Brass. D. Cylinder Set of 4 Kinds Metal, size Dia2x4cm, with knob, including Copper, Aluminum, Zinc, Iron. E. Cylinder Set of 5 Kinds Materials, weight 19g including Polyethylene, Polyvinyl Chloride aluminum, Nylon, Aluminum, Brass. All the Cylinders