Hardened Ground Racks Module : 1.5 – 3 Length : 500mm Material : SCM415 Hardening : Tooth area carburized Tooth finish : Ground teeth Grade : KHK R001 1 Strongest and highest precision of KHK standard racks. Only ground tooth section is carburized allowing attaching screw holes to be machined. Recommended mating pinion : MSGA, MSGB