Joytech 4.13'' (105mm) Diameter Spinning Top Base Crystal Glass Concave Mirror, Great High

Product Description

Attention:
Glass is fragile, do not drop on the floor.

Features:
Diameter: 105 mm. (4.13 in)
Weight: 180 g. (0.4 lb)
Material: K9 optical glass & plastic.

Package content:
1* Spinning Top Base

Features

• HIGH QUALITY ---- The base is made of K9 optical glass, smooth surface, no defects, plastic black rim protective shell, effective protection of concave lens. Specially made for spinning top. FREE REPLACEMENT IF DAMGE WITHIN 6MONTHS.
• CONCAVE MIRROR ---- The top and bottom is concave, this prevents the top from leaving the base as it spins, and you get a great game experience, and when the top spin on the base, can find the center much faster.
• RAPID STATIC ---- When your gyro works on this base, it helps the gyro get into a stable and quiet state more quickly, once it settles down, it looks like it's "frozen" motionless in place.
• EXTEND TOP SPIN TIME ---- Experiments have shown that when the top is working on a smooth surface, it can extend the spin time, reduce bottom friction, and reduce resistance.
• OPTICAL EDUCATION ---- The principle of concave mirror is reflection imaging, has the effect of focusing light source, it demonstrates the law of light reflection. The children were curious about it.This is not only a base, but also a knowledge point that children need to learn.

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