Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
Recommend to read
PUMP THE “FROG”
The farmer is often necessary to pour different liquids (fuel, water, and more) from large vessels. Alone to do not. I propose a simple device that allows you to empty any container...
CRUISER OF THE “BRICKS”
We have already told, how was the fate of the original program "atomization" of the U.S. Navy. In fact, the product became experimental single ships: one aircraft carrier -"enterprise" -...
