Sold Individually. If you need two, you will need to buy two. Ultra Si303 Beaumont 3/4" 1010 Head & Valve (Sl303) (5/8" BSP)
Diameter of thread: 29.7mm
Diemeter of bottom washer: 25.9mm
Total height (excluding rivet at bottom): 94mm
The Si303 Ultra finishing cartri...