The 2Sets 10350 Deep Rough Extension Kit provides a practical solution for extending valve stems in Rite-Temp valves and K-8305/K-28305 cartridges.

Constructed from durable brass and finished with corrosion-resistant plating, each extension piece is precision-machined to ensure a snug fit and reliable performance. The kit is specifically designed for installations that require a 3/4-inch depth adjustment, allowing plumbers and DIY enthusiasts to address mismatched thread engagements or compensate for thick wall panels. Each set includes two identical extension units, offering added flexibility for multiple repair points or spare availability.

Functionally, the extension kit effectively bridges the gap between the valve body and the handle assembly, restoring proper alignment and smooth operation of the faucet. The internal threading matches the standard dimensions of Rite-Temp and compatible cartridges, ensuring that the original stem connection remains secure without leakage or wobble. The external threads are also cut to mate seamlessly with the existing valve retainer nut and handle adapter, preserving the original installation geometry. Users can expect consistent water flow control and temperature regulation after installation, as the extension maintains the exact axial positioning required by the cartridge. The kit’s compact outer diameter fits comfortably inside standard valve housings, even those with limited clearance. Its robust material composition resists rust, mineral buildup, and mechanical wear over extended service periods. Each piece undergoes quality inspection to verify thread accuracy and surface finish, reducing the risk of cross-threading or galling during installation. The 2-set package offers exceptional value for cost-conscious buyers, delivering reliable performance at a very affordable price point. Whether replacing a worn cartridge in a shower valve or installing a new Rite-Temp system, this extension kit serves as a dependable accessory for achieving the correct stem length without custom modifications or expensive replacement parts.