Fangrui Product Details 7 Pc Pen Trimming System Inclusion 3/8inch, 7mm, 8mm, And 10mm Pilot Shaft, 3/4inch Steel Cutter Hex Key Wrench Sleeve Adaptor. Fit To Your Different Requirement For Pens Using 7 Mm, 8 Mm, 10 Mm And 3/8inch Pilot Shaft. If You Love To Turn Pens, Then This Kit Is A Must For Your Pen Blank Preparation Process. Typically After You Have Glued The Brass Tubes Into Your Pen Blanks And The Tube Is Completely Dry, It Is Common Practice To Clean Up, Square And Trim The Ends Of The Blanks. Cutting Shafts Mount Into A Drill Chuck Or Lathe Chuck, The Shaft Clean And Remove Any Excess Glue From The Tubes. Cleanly Remove Excess Glue From Your Turned Pen Tube And Blank. Features: Pen Mill Set ( 7 Pc Pen Trimming System ) For Pens Using 7 Mm, 8 Mm, 10 Mm And 3/8inch Tubes This Complete System Includes:7mm, 8mm, 3/8inch, And 10mm Pilot Shafts,3/4inch Squaring Cutter,hex Wrench 0 Size Shaft O Fits Over 7mm Pilot To Keep It Centered Heres A Project That Serves 3 Purposes:makes Using The Lathe Handles Easier And Less