แกนเพลาส่งกำลังล้อหุ่นยนต์ DIY short shaft rod for robot transmission wheel [เลือกแบบ]

[ 3*20mm 20pcs ]
The length of this shaft is only 2 cm. It is often used as a gear transmission shaft. The iron shaft is electroplated. It is of good quality and very strong, so there is no need to worry about bending.

【Diameter】: 3mm
【Length】: 20mm 
【Quantity】: 1 pack of 20


[ 3*60mm 10pcs ]

Optical shafts and transmission shafts used in small technological productions. Iron, surface electroplating treatment. The hardness of this iron shaft is enough to support small technological works. If you need a harder shaft, click here to buy

【Diameter】: 3mm
【Length】: 60mm
【Quantity】: 1 pack of 10