SLOTTED MANDREL CORE SANDING INTERNAL HOLES SPLIT END HEAD 1/4" THICK -3 LENGTHS (E5) NOVELTOOLS SLOTTED MANDREL - 1/4" SHAFT & BODY SET OF 3 LENGTHS 4" - 6" - 8" LONG MANDRELS STRAIGHT BODY & SHANK QUICK CHANGE MANDREL Mandrel is used for internal core/hole sanding with a 1/4" thickness straight body, with a split end that measure 3/4" (Slot) and finished in Black Anodized protective finish. Mandrel for use with Abrasive sheets / roll material. The slotted - split end mandrel holds abrasive material, which are secured in the slot and rolled around the head. Mandrel - Arbor is excellent for sanding or finishing internal holes, bore sanding and polishing. Mandrel can be used with many rotary tools, including Drills.