Description: 1.Only one unit to choose among 0 to 9 totally 10 digits. 2.Two change switch to get increasing sequence or reduce sequence. 3.please pay attention, pack total of 20 pieces they need you to assembled for used. it is easy to assembled and DIY…
Description: 1.Only one unit to choose among 0 to 9 totally 10 digits. 2.Two change switch to get increasing sequence or reduce sequence. 3.please pay attention, pack total of 20 pieces they need you to assembled for used. it is easy to assembled and DIY…
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