Tef ɗin bututu, kuma ake kiraduck tef, shine tef- ko srim-goyon bayan matsa lamba-m tef, sau da yawa mai rufi da polyethylene.Akwai gine-gine iri-iri ta amfani da goyon baya daban-daban da adhesives, da kuma kalmar 'duct tef' yawanci ana amfani dashi don komawa ga kowane nau'in kaset ɗin zane daban-daban na dalilai daban-daban.Tef ɗin bututusau da yawa yana rikicewa tare da tef ɗin gaffer (wanda aka tsara don zama mara tunani kuma a cire shi da tsabta, sabaninduct tef).Wani bambance-bambancen shine foil mai jure zafi (ba tufa ba) tef ɗin da ke da amfani don rufe bututun dumama da sanyaya, wanda aka samar saboda daidaitaccen tef ɗin ya gaza da sauri lokacin amfani da bututun dumama.Tef ɗin bututushi ne gaba ɗaya silvery launin toka, amma kuma ana samunsa a cikin wasu launuka har ma da zane-zane.
A lokacin yakin duniya na biyu, Revolite (sa'an nan sashen Johnson & Johnson) ya ƙera wani tef ɗin da aka yi daga roba mai tushe wanda aka yi amfani da shi a kan goyan bayan rigar duck.Wannan tef ɗin ya yi tsayayya da ruwa kuma an yi amfani dashi azaman tef ɗin rufewa akan wasu harsasai a lokacin.
"Duck tef"an rubuta a cikin ƙamus na Turanci na Oxford kamar yadda ake amfani dashi tun 1899;" tef" (wanda aka kwatanta da "watakila canjin tef ɗin duck na farko") tun 1965.