RW2i 1-1/4" Rubber Wheels - Internal Set Screw - Fits 3mm axle - Pair

These 31mm diameter (almost 1-1/4") wheels are ideal for mini-sumo robotics, with internal set-screw mounting and 3mm axle hole.

Redesigned at the same time as the RW2, These very similar hubs were made to trim off a valuable 3.8mm (.15") by making the set-screw hole on the aluminum rim, underneath the tire. It means you have to remove the tire from the hub to tighten it, but well worth it for designs that need every millimeter of room! It comes with a generously thick rubber tire for maximum traction.

The tire mounted on the hub measures in at 31.2mm (1.23in) diameter and overall width of 13.2mm (0.52in) wide. The hub is drilled for a 3mm axle ideal for the GM12a-14a series of gear motors. It's a nice, fat, beefy wheel ideal for small robots. Secure it to your motor shaft with the included 4-40 hex grub/setscrew (requires 0.050 hex wrench - not included)

The entire wheel assembly weighs 12 grams.

Sold in Pairs. Motor not included.