Item Type: Long Rod Nut Compatible With: For Gobilda, for TETRIX Material: Stainless steel Purpose: Used as the driving shaft accessories of intelligent robot, also applicable to lathe equipment and engineering equipment Package List 5 x Long Rod Nut 1. Match the design size when using.2. When you cut your design size, you should operate under professional guidance to ensure safety. 1Adopt good quality stainless steel, possess high hardness, wear resistance and durability 2There are seven lengths to choose from, You can use a metal cutting blade according to your own needs to cut dia 12mm stainless steel hex nut into different length 3The outer diameter is 12mm, the appearance is a hex shape of 11mm flat spacing, which is a perfect combination of a circular axes with diameter of 12mm and a hex shape with plane spacing of 11mm 4Come with the advantages of two axes of the circular and the hex, can be used with other robot parts with a hexagonal hole 5Effectively prevent parts from rotating and slipping on hex axes, making the force of the parts more average, greatly increasing friction and transmission or driving force efficiency, very practical 6Can also be used through the bearing with an inner diameter of 12mm and other robot parts with matching hexagonal holes, greatly enhancing the bearing and transmission capacity of robot parts 7Can be used as the driving shaft accessories of intelligent robot, also applied to lathe equipment and engineering equipment