MOCAP Pipe Caps are designed to fit many different styles and sizes of threaded pipe ends, allowing for maximum flexibility. Designed to secure Metric, BSP and NPT threads from damage and debris during transit, handling and storage, our PC series Pipe Caps are easy to install and remove. Inside Length: 1.35in / To Fit BSP: G10 / To Fit NPT: 10 / To Fit Pipe OD: 10.74803