Timing Pulley GT2 (36 Teeth-6.35mm Inner Diameter-10mm Width) IRF7410 the Arduino Advanced Kit makes

the Arduino Advanced Kit makes learning simple and enjoyable

This serial Wifi  module add wireless ethernet connectivity to your microcontroller / Arduino through serial TTL pins (Rx and Tx)

The bearing cage made from special polymers allowing for smooth and noiseless operation

– Up to 16MIPS Throughput at 16MHz

which allows multiple DS18B20s to function on the same 1-Wire bus

Timing Pulley GT2 (36 Teeth-6.35mm Inner Diameter-10mm Width) IRF7410 the Arduino Advanced Kit makesThe GT2 pulley with 36 teeth or grooves is one of the best choices for 3d printer construction or XYZ linear motion for small CNC because the GT2 pulley tooth profile is anti backlash. Why? The rounded teeth of this tooth and belt are engaged together longer providing a smoother transition between teeth. This is what you need for your 3D printer or transmission mechanism. This pulley has 36 teeth, and a 6. 35mm inner bore. Two set screws can be used