What’s included Brass pop-up sink drain Zinc-alloy P-siphon (P-Trap) pipe for the wall drain pipe Bottle cap with extension tube Key benefits — why this product solves common sink drain problems Durable construction: brass pop-up drain and zinc-alloy P-siphon provide corrosion resistance and long service life for regular bathroom use. Flexible fit and adjustment: an included extension tube plus adjustable height and outlet let you match varying sink and cabinet configurations without custom parts. Broad compatibility: designed for standard 1-1/4 inch drain fittings and compatible with drains that have an overflow, so it works with many sink types. Important specifications and features Drain fitting size: for use with 1-1/4 inch drain fittings. Height adjustment: extension tube allows adjustable height from 110 mm to 200 mm. Outlet adjustment: adjustable outlet length up to 300 mm. Materials: brass pop-up drain; zinc alloy P-siphon pipe. Includes bottle cap with extension tube (as supplied). Performance and function Provides a P-trap (P-siphon) assembly to connect the sink drain to the wall drain pipe. Pop-up drain included for straightforward drain opening/closing. Adjustable components simplify alignment and installation in common bathroom layouts. Practical applications / use scenarios Undermount bathroom sink: use the adjustable height and outlet to align the P-trap inside a vanity cabinet while keeping clearance for storage. Vessel sink on countertop: the brass pop-up drain and adjustable tube accommodate taller drain assemblies and differing countertop thicknesses. Pedestal sink installation: the adjustable outlet and extension tube help connect the sink drain to a wall outlet while maintaining an efficient trap profile. Installation notes Designed for standard 1-1/4 inch drain fittings; confirm your sink drain size and overflow compatibility before installation. Height and outlet adjustments allow on-site modification to fit most common sink and wall-drain configurations. All parts supplied: pop-up drain, P-siphon pipe, bottle cap with extension tube. This P-siphon pop-up drain assembly offers durable materials, straightforward adjustability, and compatibility with standard 1-1/4 inch drains and overflow fittings for undermount, vessel, and pedestal sinks.