Bronze lifter bushing these are for installing in a bug case, after you have machined the case. Bushings are .876 O.D. De-burr the O.D. of the bushings at oil holes. Bushings have a inside groove so oil gos to all of the lifters all the time, notch on the top is for line up to the oil holes in the case. Finish reaming or honing will be needed to get the correct lifter to bushing clearance. I can not ream or hone the bushings before they are installed. $128 a set of (8) shipped USA. Note: (I do not have or sell instructions to install the bushings.) I do not sell the tooling to install the bushings! All out of USA sales that a customs form has to filled out are subject to a minimum of a $10 fee. my paypal & email is [email protected] Thanks Rocky