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Injection needles designed for percutaneous fluid injection into the muscular layer beneath the dermis. These needles typically consist of hollow, sharply pointed, metallic devices with the opposite end finished in a connector (e.g., female Luer slip or Luer lock) that can be easily attached to a syringe. Intramuscular needles are typically of a larger diameter (e.g., 18 to 26 gauge) and longer (typically from 1 to 2 inches [25 to 51 mm]) than hypodermic needles.
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