One-piece

Coveralls are one-piece protective wear that is usually worn by people that do heavy, manual work.

A one-piece metal hammer with an applied rubbery handgrip is nonetheless one integral piece, because the head, shaft, handle, and butt are cast in a single mold and/or forged as one seamless unit.

A man's one-piece swimsuit can be as small as a jock strap, whereas a woman's one-piece swimsuit covers both the genitalia and the breasts.

The connecting rods are one-piece forgings of alloy steel with a copper/lead steel-backed bearing at the large end and a phosphor-bronze bush at the small end.

The two-axle bogies, of Metro-Vick swing-link type, are of one-piece cast-steel construction with box-section side frames and headstocks.