EUDAX 18 Set DC Motors Kit,Mini Electric 1.5-3V 24000RPM Hobby Motor with 252Pcs Plastic Gears,2 x AA Battery Holder ,Wires for STEM DIY Toy

Great kit

Delivered quickly. Solid product. The boy is using them to motorize his 3d printed gizmos.

Great product

This is a great project starter kit. Though there are a few problems most of the pieces are fine and of reasonable quality. I think most of my complaints come from quality control. My major complaint is the shaft diameter of both the motors AND the multiple lengths shafts. The inner diameter of the gears are all over the place. I know some gears are meant to be loose, but on the opposite spectrum some of the gear mounting holes are so small that they will will not fit any shafts. Some are so large and wobbly that it's difficult to see their use without solder or epoxy and something more (diameters measured at close to three or four mm!). My other complaint is that you can't tell in the product photos that some of the battery packs/holders are lever arm or switch type. You pull or push a lever to connect the second battery. This is a really nice feature! ... But I just wanted regular because it's just an endless battle with my students who struggle to understand why theirs is different. Four to five stars for overall value and quality, buy it's a hard decision because of the gear problems. I'd buy more if they could fix the mounting concerns.

Crazy like 10 cents per item, 2 dollars for each motor-motor bracket=battery holder-rocker switch & then throw in a couple hundred gears and other items. Only wish they included some propeller blades