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 nau'o'in gine-gine ta amfani da daban-daban na baya da adhesives, da kuma kalmar' duct tape' yawanci ana amfani dashi don komawa ga kowane nau'in kaset ɗin zane daban-daban na dalilai daban-daban.