50 Pack 1/2” Diameter x 1-1/2” Length x 1/8” Pilot Hole 40 Grit Ceramic Grain Straight/Untapered Cartridge Roll, Pack of 50, Includes 1x CR-9 Mandrel

Pro-Graad Ceramic Cartridge Rolls are engineered for high-performance metal finishing in tight, hard-to-reach areas. Each roll measures 1/2” in diameter by 1-1/2” in length with a 1/8” pilot hole and features coarse 40 grit—ideal for aggressive stock removal, deburring, and surface preparation. This professional-grade set includes ten premium rolls and a CR-9 mandrel for secure mounting and smooth operation. At the core of each roll is next-generation ceramic alumina abrasive grain, which delivers up to twice the cutting speed and three times the service life of traditional aluminum oxide abrasives. The ceramic grain self-fractures during use to reveal fresh, sharp cutting edges for consistent, reliable performance. Backed with heavy-duty X-weight cotton cloth, these rolls offer excellent strength, flexibility, and resistance to high-speed operation—up to 18,000 RPM. Ceramic grain abrasives are especially well-suited for grinding and finishing hard metals. They perform exceptionally on stainless steel, titanium alloys, and exotic alloys used in demanding industries such as aerospace and manufacturing. These rolls also excel in high stock removal applications, controlled finishing, and other challenging metalworking tasks. Whether you're working with ferrous or non-ferrous metals, they provide a versatile, long-lasting abrasive solution. The spiral, multi-layer design allows new abrasive layers to be exposed as the roll wears, extending lifespan and maintaining a consistent cut. An integrated anti-friction grinding aid reduces heat buildup, minimizing discoloration or surface damage. Ideal for bores, pipes, corners, and other tight spaces where larger tools can’t reach, the Pro-Graad cartridge roll is a must-have for machinists, fabricators, and welders. With quick self-clamping via the grooved conical arbor, this set is built for efficiency, durability, and precision in even the most confined grinding applications.

• [IN THE BOX]: 50 Pack Pro-Graad 1/2” Diameter x 1-1/2” Length x 1/8” Pilot Hole 40 Grit German Ceramic Grain Straight/Untapered Cartridge Rolls, 1 each CR-9 1/4" shank x 3-1/2" overall length Mandrel
• [PREMIUM CERAMIC PERFORMANCE]: Engineered with next-generation ceramic alumina grain, these cartridge rolls offer 2X the cut rate and 3X the lifespan of traditional aluminum oxide abrasives. Designed for fast, aggressive stock removal with consistent results. Ceramic grain abrasives are particularly well-suited for grinding and finishing hard metals, including stainless steel, titanium alloys, and exotic alloys. They excel in high stock removal, controlled finishing, and demanding metalworking tasks across a range of ferrous and non-ferrous materials.
• [DESIGNED FOR HARD-TO-REACH AREAS]: Perfect for precision work in bores, pipes, corners, and contoured surfaces—anywhere larger tools can't reach. A must-have for detailed grinding, deburring, and finishing in tight or confined areas. Especially effective in industries where stainless steel, titanium, or high-performance alloys are used, such as aerospace and advanced manufacturing.
• [LONG-LASTING, MULTI-WEAR DESIGN]: Constructed with a multi-layer spiral design that continuously reveals fresh abrasive grain as it wears down. The rolls are backed with heavy-duty X-weight cotton cloth for added durability, flexibility, and extended tool life—even under high-speed, high-pressure grinding tasks.
• [FAST, SECURE ATTACHMENT]: Features a grooved, conical arbor for quick, tool-free self-clamping. This design ensures the roll stays securely in place during high-speed use (up to 18,000 RPM), minimizing downtime and maximizing productivity.
• [PRODUCT GUARANTEE]: All Pro-Graad products are made with quality materials, which exceed ANSI and EU standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is a USA Company with US Based Customer Support.