Punch grinder rollers are used to adjust the work piece before grinding Diameter of punches that can be ground is 0. 020~0. 394/0. 5~10. 0mm ~ Accuracy of the rollers is within 0. 0002. Jim Dunlop Tortex Flex Jazz III XL 1.0mm 12 Pack Guitar Picks (466P1.0) ; Color. BLUE ; Material. Nylon ; Size. 1.0mm ; Guitar Pick Thickness. 1.0 millimeters HHIP Pro Series Fine Tuning 2-Way Ultra Precision Punch Former – Jumbo... Electric Punch Grinding Machine Adjustable Speed Punch Grinder Accuracy 0 002mm Needle Grinding Grinder 110v 220v Accuracy of the rollers: within 0. 0002 Precision Small Punch Grinder 5-10mm or . 020~. ~ Punch grinder rollers are used to adjust the work piece before grinding. Punch grinder can be placed on the bed of surface grinder for automatic precision cylindrical grinding HHIP 3701-0110 Pro-Series Precision Drill Chuck With Key, Jt6 Taper Mount 1 64 1 2 Capacity