School Lab Hooked Weight Set

School Lab Hooked Weight Set

22mm diameter of the iron hook code body, the upper part of a hook ring, the lower part of a 4mm width of the groove, and there is a metal rod and groove cross intersection, used to hook. Surface integral chromium plating.
Hook code for each weight of 50g, the quality of error in + 0.1g. 10 for one set, in a 137*70*48mm blue hook code box.