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The number 4 knife handle is specifically designed to accommodate a range of blade sizes that typically includes those labeled #20 to #25. This handle is part of a classification system where certain handle sizes correspond with specific blade sizes to ensure proper ergonomics and functionality during tasks.

The design of the number 4 handle ensures a secure grip and allows for better control when utilizing blades in this range, which are generally larger and used for different applications like cutting through tougher materials or performing more significant incisions. It’s important for users to match handles and blades correctly to minimize the risk of accidents or improper use.

In contrast, the other choices involving blade sizes outside the #20-25 range do not match the intended compatibility with the number 4 handle. The selected blade sizes are unsuitable for this handle or would not fit securely, potentially leading to safety issues during use.