Choose a KOPkit by its three letter wet-end material designation:
| ATC | KVT | SHT | VVC |
| AHS | PAC | STC | VVH |
| ATH | PHC | STS | VVS |
| ATS | PHH | STT | VVT |
| ATT | PHS | SVC | WAT |
| AVC | PHT | SVT | WHC |
| AVS | PTC | VAC | WHH |
| KHC | PTH | VAT | WHT |
| KHS | PTS | VBC | WHS |
| KHT | PTT | VHC | WTC |
| KTC | PVC | VHH | WTH |
| KTH | PVH | VHS | WTS |
| KTS | PVS | VHT | WSS |
| KTT | PVT | VTC | WVC |
| KVC | SAT | VTH | WVS |
| KVH | SHC | VTS | WVT |
| KVS | SHS | VTT |
