5Pcs/Set 0.5N,1N,2N,3N,5N Coil Spring Group Junior Physics Mechanics Teaching Equipment Hooke's Law Teaching Equipment

5Pcs/Set 0.5N,1N,2N,3N,5N Coil Spring Group Junior Physics Mechanics Teaching Equipment Hooke's Law Teaching Equipment
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sku: 1005006566058802
$4.37
Shipping from: China
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