LTWFITTING Brass 3/16 OD x 1/4 Male NPT Compression Connector Fitting(Pack of 5) Type: Male Compression connector Tube Size:3/16" OD Thread:1/4" Male NPT Package Content : 5 PCS(Include Nut And Ferrule) Materies: BRASS, Net Weight: 20g/PC Choosing products dimensions and quantities at column of size and colour seperately,price would be more favorable if choosing wholesale.