Features：

• One of the most frequently used parts in Makeblock platform,compatible with all makeblock motion and Structure components.
• Made from 6061 aluminum extrusion, anodized surface. Excellent strength and twist resistance.
• Threaded slot enables easy and flexible connection.
• With holes on 16mm increments. and M4 thread holes on both ends.
• Cross-sectional area 8x24mm, length 192mm. 
• Sold in Packs of 4.

Size Charts(mm):

Demo: