You are buying one new mechanical fuel pump block-off or blanking plate ( very limited supply ) that fits TR250 , TR6 ,TR7 , Herald , Vitesse , GT-6 , TVR 2500 , Spitfire 1300 ,1500 and MG Midget 1500 engines. It is heavy duty and measures approx. 3/16" thick. It is silver anodized!!!  ( Not black like it appears in first photo ). You will need one of these if you are converting to an electric fuel pump. $4.95 SHIPPING ( 50 STATES , PR ). 

Please take a look at my other TRIUMPH items on E-bay.