• 【Model】: Sleeve Bushing
• 【Material】: Metal
  
• 【Dimensions】: 3.1mm, 4.1mm, 5.1mm, 6.1mm, 8.1mm
  
• 【Specific parameters】:
  -- Inner diameter 4.1, outer diameter 9mm, thickness 5mm, weight 2g (M3 locking hole)
  -- Inner diameter 5.1, outer diameter 10mm, thickness 5mm, weight 2.4g (M3 locking hole)
  -- Inner diameter 6.1, outer diameter 10mm, thickness 5mm, weight 2.4g (M3 locking hole)
  -- Inner diameter 8.1, outer diameter 12mm, thickness 5mm, weight 2.6g (M3 locking hole)
  
• 【Color】: Silver
  
• 【Features】: Shaft sleeve, cylindrical, with a fastening hole in the center, already equipped with machine screw (M3) for clamping the shaft and steel wire.
  
• 【Application】: Also known as wheel lock, also known as wheel block, as the name suggests, it is used to lock the inner limit or outer limit of the wheel when installing it, which can lock the steel wire or landing gear axle. To prevent the wheels from falling off while rotating, providing a fixing effect.

• According to your choice!