M54*0.75mm internal thread to M42*0.75mm internal thread (SKU: #95741)/M48*0.75mm internal thread (SKU: #95742) thread adapter.Convert M54 internal thread to M42 internal thread -#95741.Convert M54 internal thread to M48 internal thread -#95742.All-metal structure and anodized aluminum process, durable, can be used for a long time.This is a very high quality anodized aluminum adapter.Large internal thread: 4mm-M54x0.75mm internal thread small internal thread: 4mm-M42x0.75mm (#95741) / 4mm-M48x0.75mm (#95742)Thickness: 8mm/0.31in Outer diameter: 60mm/ 2.36inThe package includes:1 x conversion ringAttention:Allow an error of 0-2mm due to manual measurement. Make sure you don't mind before you bid.Due to differences between different monitors, the picture may not reflect the actual color of the item. Thank you!If you really care about these details, don't order.