4 in. Stealth Wheel 3/8 in. Hex Bore 35A Durometer

The inside black portion of this wheel is made from molded polycarbonate plastic. The outer tread is TPU (thermoplastic polyurethane) with a 35A durometer hardness. The green treaded stealth wheels are not intended for drive wheels, but are the perfect wheel for intakes and other auxiliary robot mechanisms. The bore of this wheel is a 3/8" hex hole, which is intended to be driven by a 3/8" hex shaft or spinning axle. There is a bolt pattern on a 1.875" diameter bolt circle for mounting sprockets, hubs, and gears.

Product Usage:
Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, https://bit.ly/loctitematerialcheck

Usage: Use #10-24x3/4 thread forming screws to attach sprockets or hubs to this wheel.
With Axle and Hub:

• These stealth wheels have an integrated hub. This means no hub is needed to mate this wheel with a shaft.

With Sprocket:

• If you wish to drive this wheel with a sprocket than you will need to use a 250 Sprocket spacer with 6#10-24x3/4 thread forming screws.