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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For those who often have to go up and down with the bike on the stairs, might want a special handle for carrying. It is made of metal tube 18...25 mm and is fixed by welding or clamps to...