MARINE BOAT DURABLE SOLID HAND RAIL FITTING SS316 TEE FORM 90 DEG 7/8" 22.2MM This is a 90-Degree hand rail fitting Tee form that is formed and polished from type 316 stainless steel for appearance and durability. It has a mirror-polished surface. The pipe's overall diameter is 7/8", which is 22.2mm. The stainless steel surface provides maximum corrosion resistance and durability. We also have different measurements for tee and bow forms with various Degrees. Check out our store to find out more about the tee and bow form that suits your application!