Type of product: Stop end / plug / end cap Specification: Socket Most common size reference: 1 inch Overall outer dimensions approx: Length: 22mm Depth / Diameter: 40mm Internal diameter size approx: 34mm Commonly used with: 1 inch rigid pipe and 1 inch flexible rigid pipe. Additional notes: Best to use a plumbing cleaner then pipe cement to assemble. This part is female so it covers the outside of 1 inch pipe work.