For sale is Ten 5/16 CHE valve guide blanks. Perfect for someone that repairs performance cylinder heads. One guide was shortened in overall length but never used.

4 x .750 x 3.00 x .309

2 x .735 x 3.00 x .309

1 x .625 x 3.00 x .309

2 x .565 x 3.00 x .309

1 x .565 x 2.42 x .309