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Rotary engine fidget keychain
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Assembly instructionsRotary engine keychain designed by me as a fidget toy/keychain. Uses 3 bearings and screws. Individual components and 3D model screenshots included for assembly guide.1 x 6703 (17x23x4 mm)2 x MR85 (5x8x2.5 mm)1 x Thread rolling screw #4-20, 1/2" Length
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