【4】Style: Steel Link Chain, seperated by Nylon Ball; Zinc Plated, Black oxide;
【5】Effeciency: Coz there are many sizes of screws and nuts, often we can't know specific nuts or bolts we need, so it's necessary to get this nuts bolts checker in our daily jobs.
Description
Unit weight: 460g,
This checker set could check most of screws and nuts which we often use, so it's very convenient and effective for us.