[Features]· Rotational direction positioning part.· With 2 serration locks in combination 6° and the adjustment multiple angle, that is 2, 3, 5, 6, 10, 12, 15, 20, 30 can be positioned.· At the center of the serration lock, the reamer hole and female thread have been machined.· In serration lock sets there are 2 types of system· Choose from 2 types of installation methods for machinery / equipment.· Used in conjunction with serration lock use guide LXP, rotation operation in loosened serration lock state is easy.· Used in conjunction with serration lock use spring LXP when the serration lock is loosened, serration engagement releases.