85 kinds of plastic gear packages, scientific and technological model production, gear rack, reduction gear box, 0.5 mold

Cool feature: no repetition! ! !
Four fan gears: 28 tooth fan, 21 tooth fan, 15 tooth fan, 12 tooth fan
Three kinds of worm gears: 6-6, 6-7, 6-8
Four kinds of blue spindle: D hole 3, 4mm hole, round hole 2.3, 3.17mm hole spindle
A large pulley: 363A2AB pink pulley
Two kinds of clutch gears: 163A clutch straight teeth, 263B clutch gear
Four kinds of color multi-way bushings: three kinds of three-way (blue, green, yellow), one kind of white four-way
One type of long spindle gear: 102A long section
In addition, other gears are: 1 kind of copper gear, 1 kind of bevel gear, 1 kind of rack, 3 kinds of bushings, 1 kind of three belts, 19 kinds of double-layer gears, 8 kinds of main shaft gears, 4 kinds of pulleys, single-layer gears 15 kinds, 14 kinds of crown gears. (Covering a variety of new gears such as: 502A, 422.5A, 442A, C36082B front, C282.5A, etc.)
85 kinds of gear packages, covering all kinds of gears, you can also learn, you can also teach, you can DIY model toys! Including: a variety of bevel gears, shaft sleeves, main shaft gears, belt wheels, single-layer gears, double-layer gears, crown gears, motor gears, copper gears, racks, belts, and various shaped gears