Knockout punch

Chassis punches: assorted sizes round and square

Chassis punches: assorted sizes round and square disassembled

A knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw. There are three different drive systems: manual, ratchet, and hydraulic.

单词	Chassis punch
释义	Chassis punch 英语百科 Knockout punch A knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw. There are three different drive systems: manual, ratchet, and hydraulic.
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Chassis punch

Knockout punch