KittenBot® 2Pcs Robot Chassis Universal Wheels With M3 Screw For Arduino Smart Car Kit

Features: 1. KittenBot caster with the metal ball, white ABS/PC case, support wheel for KittenBot basic mobile platform robot design 2. Compatible with common Arduino robot chassis, such as 3Pi robots 3. The universal wheel can be mounted to the chassis via the four screw sets included in the kit. The specifications of the two screw holes are M3 Specifications: - 2 x 12mm diameter metal balls and 4 x M3 screw caps - 4 x M3 screw caps, - Length: 2.2cm - Width: 1.6cm - Height: 1.5cm - Product Weight: about 20g Package Included: 2 x Robot Chassis Universal Wheels