Based on this product's specifications, here are some alternatives and similar models
Lens Cap JJC CL-T2 for SB7275 — protective front cap for lens (JJC SB7275)
Summary description:
JJC CL-T2 is a replacement front lens cap designed for the SB7275 model. It provides basic protection against dust, scratches and light impacts when the lens is not in use. The cap fits the specified JJC SB7275 lens interface and is intended for safe storage and transport, helping maintain optical surfaces clean and undamaged.