Bidet Attachment T Adapter, 7/8 Pipe Male, 7/8 Female, 1/4 Inch Hose. 7/8 inch adapter, male and female ends, for 3/8 inch Hot Water hose connection to bidet. Easy to install when you have the right parts. 7/8" ABS Nylon T valve adaptor for 3/8 in. hose outlet. Bidet T adapter is a used to connect to hot water. A must for under the bathroom sink hot water hook up.