ARRMA Front Rear Diff Set, Spiral 43T 10k Oil Thumb Wrench This is the ProTek R/C

This is the ProTek R/C "TruTorque" 4-in-1 Multi-Wrench

The ProTek R/C "TruTorque" clutch assembly tool simplifies clutch shoe removal and installation

Red anodized countersunk aluminum washers

The case itself features a tough aluminum shell

ARRMA Front Rear Diff Set, Spiral 43T 10k Oil Thumb Wrench This is the ProTek R/CProduct Details This Front or Rear Spiral Cut Diff Set provides a pre assembled replacement unit for servicing your vehicle. Features Factory assembled and filled with 10k cSt silicone oil for fast and efficient servicing Tough steel internal gears for long lasting durability in all conditions Strong composite diff case 43T spiral cut steel main gear for increased durability under extreme loads Metal Cross Shafts and inserts for increased efficiency