Diàngōng de gōngjùxiāng lǐ tōngcháng yǒu yī bǎ jīwěijù.
An electrician's toolbox usually contains a keyhole saw.
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鸡尾 (chicken tail) describes the saw's shape — narrow, tapering blade like a rooster's tail feather, perfect for poking through a starter hole and cutting curves. Same metaphor as English 'pad saw' / 'compass saw', but the Chinese name is more vivid.
