These needles are ideal for use in routine blood collection procedures.

They are designed exclusively for single use, and feature color-coded protective needle caps to simplify identification of the needle gauge. Pink caps correspond to 18G needles, yellow caps to 20G, green caps to 21G, and black caps to 22G. Available in two lengths, 25.4 or 38.1 mm (1 or 1¹/₂"). Single-sample needles are designed for veterinary use only.