19TW* X 1 A. Sterile. Ultra-sharp, tri-beveled, anti-coring, stainless steel needle. New improved needle lubricant. Translucent, color-coded luer lock hub. Color coded gauge stripe and bar code on individual package.
Planetary Gear Unit for Students, mall-size unit for explaining the principle of planetary gear. By setting the internal, sun and pinion gears at different motions
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