A versatile support for various lab elements. Great for suspending pulleys and spring scales, among others! Ring bears an inside diameter of 13mm.
This simple but amusing magnetic toy will keep you busy for hours!
Build your own windmill generator kit by recycling a plastic bottle!
Build your own 10 inch kaleidoscope with this great kit!
Ever wonder how to survive in the wilderness? These cards can help!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
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