It looks like you're mentioning "Terumo Insulin Syringe 1ml U-40 31G x 1/4" Needle. Box of 100". These are insulin syringes manufactured by Terumo, designed specifically for insulin administration.

• The "1ml" indicates the volume of the syringe, which is 1 milliliter.
• "U-40" denotes the concentration of insulin. In U-40 insulin syringes, each milliliter of the syringe holds 40 units of insulin.
• "31G x 1/4"" refers to the needle specifications. The needle gauge (31G) indicates its thickness, and "1/4"" specifies its length.