Based on this product's specifications, here are some alternatives and similar models
TACWISE 18G x 35 mm Galvanized Brad Nails / 5,000 pcs – Type 18G for Pneumatic Brad Nailers
Summary description:
Pack of 5,000 TACWISE 18G (1.2 mm) brad nails, 35 mm length, galvanized finish for corrosion resistance. Designed for use with compatible pneumatic brad/staple nailers that accept 18G wire nails. Suitable for trim, moulding, cabinetry, joinery and light woodworking where a fine-gauge nail is required.