You can buy DT4P-BT-BK from ConnectorTrade

Slip-on boots are not only aesthetically appealing, but also provide increased protection from dirt, paint overspray and pressure washing.

DT2P-BT 2pin, Gray DT2S-BT 2pin, Gray DT2P-BT-BK 2pin, Black DT2S-BT-BK 2pin, Black DT2P-BT-YW 2pin, Yellow DT2S-BT-YW 2pin, Yellow DT3P-BT 3pin, Gray DT3S-BT 3pin, Gray DT3P-BT-BK 3pin, Black DT3S-BT-BK 3pin, Black DT3P-BT-YW 3pin, Yellow DT3S-BT-YW 3pin, Yellow DT4P-BT 4pin, Gray DT4S-BT 4pin, Gray DT4P-BT-BK 4pin, Black DT4S-BT-BK 4pin, Black DT4P-BT-YW 4pin, Yellow DT4S-BT-EXT 4pin, Gray, Long DT6P-BT 6pin, Gray DT4S-BT-YW 4pin, Yellow DT6P-BT-BK 6pin, Black DT6S-BT 6pin, Gray DT6P-BT-YW 6pin, Yellow DT6S-BT-BK 6pin, Black DT8P-BT 8pin, Gray DT6S-BT-RED 6pin, Red DT8P-BT-BK 8pin, Black DT6S-BT-YW 6pin, Yellow DT12P-BT 12pin, Gray DT8S-BT 8pin, Gray DT12P-BT-BK 12pin, Black DT8S-BT-BK 8pin, Black DT12P-BT-EN 12pin, Gray, Long DT12S-BT 12pin, Gray DT12P-BT-YW 12pin, Yellow DT12S-BT-BK 12pin, Black DT12S-BT-EN 12pin, Gray, Long DT12S-BT-YW 12pin, Yellow DT48S-BT 48pin, Gray