This four piece Asian and US Domestic engine electric temperature gauge adapter fitting kit from Equus includes 4 solid brass bushings to adapt from 1/8-27 NPTF female threads to male 3/8-18 NPT, 1/2-14 NPT, 1/4-18 NPT, and M16x1.5 respectively. Contains four adapters and four o-rings 100% brass adapters Simplifies installation Specifications Brand Equus Part Number E9861 Fitting A Quantity 1 Fitting A Style Straight Fitting A End 1 Size 1/8 in NPT Fitting A End 1 Style Female Fitting A End 2 Size 3/8 in NPT Fitting A End 2 Style Male Fitting B Quantity 1 Fitting B Style Straight Fitting B End 1 Size 1/8 in NPT Fitting B End 1 Style Female Fitting B End 2 Size 1/2 in NPT Fitting B End 2 Style Male Fitting C Quantity 1 Fitting C Style Straight Fitting C End 1 Size 1/8 in NPT Fitting C End 1 Style Female Fitting C End 2 Size 1/4 in NPT Fitting C End 2 Style Male Fitting D Quantity 1 Fitting D Style Straight Fitting D End 1 Size 1/8 in NPT Fitting D End 1 Style Female Fitting D End 2 Size 16 mm x 1.5 Fitting D End 2 Style Male Washer Yes Material Brass Color Natural Finish Natural Quantity Kit