You need to carefully pour a viscous liquid (e.g. oil paint) from banks in a narrow-necked container or to fill in the gaps with the heated tar or mastic? Here you will rescue this type of nozzle, made of half cap from the same banks, tightly inserted in holes on the tube spout.
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A good host never gave up his horse under the open sky: proskakal, carefully covered him, flushed, with a blanket, fed-fed and wound up in the stables to rest. The same respect is...
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If you do not have a special needle for inflating nipple of a volleyball or soccer ball, take advantage of... ordinary medicine dropper with an elongated spout. Rubber part is a bit cut...