Cap D-31 (without insert) Сharacteristics Type: cap D-31 Diameter: 30,8±0,2 Insert: without insert Control ring: no Suitable for canisters: Canister Round 0,5L, Canister RD 0,4L, Canister Round 0,375L, Canister RD 0,350L, Canister RD 0,250L Varieties of caps Cap 31 RD black article : 8265 Cap 31 RD blue article : 8261 Cap 31 RD metallic article : 8256 Cap 31 RD red article : 8259 Cap 31 RD yellow article : 8263