Select the type of needle commonly used on skin.

The cutting needle is commonly used on skin due to its design, which allows it to create small and precise punctures. Cutting needles have sharp edges that enable them to easily penetrate through tougher tissue, such as skin, and they excel in creating clean cuts that minimize trauma during suturing. This characteristic makes them particularly advantageous in surgical procedures where the integrity of the surrounding tissue is essential for healing.

In contrast, other needle types serve different purposes. For instance, round needles are typically used for softer tissues where a less invasive approach is required. Blunt needles are designed for tasks such as suturing delicate tissues or for use in certain medical applications, like filling or injecting, but are not suitable for penetrating skin. Spatula needles may be used for specific applications in ophthalmology or other specialized fields but are not standard for suturing skin. Thus, the efficiency and effectiveness of cutting needles make them the preferred choice for skin sutures.