This sandpaper roll "long" mandrel tool has the following specifications:
1/4" shank diameter by 5" overall length (1/8" pilot). This mandrel is intended for use with all 1/2" and 3/8" OD sandpaper rolls that we offer.
We've taken the guess work out of selecting the appropriate cutting and grinding tools to undertake your engine porting effort. In this section of our web catalog we offer a wide selection of tools that you can select from; refer to the following guide for the quantity and type of cutting tools that are required for a specific porting application. Grinding Tool Application Guide.