Drive Shaft Hex Shaft for TETRIX for Gobild Feature:1. Good material: forged with high quality stainless steel with high hardness and good toughness for wearing and long use.2. Easy cutting: you can use the metal cutting blade to cut the hexagonal shaft to the length you need according to your needs, very convenient.3. Hexagonal shaft rod: it has a threaded M4 hole at both ends. The outer diameter is 8mm, and the appearance is a hexadecimal spacing of 7mm. Perfect combination of round shank and hex.4. Practical application: it can effectively prevent parts from rotating and slipping, and makes the force more even. It greatly increases friction and transmission for driving efficiency.5. Wide tool: used as a drive shaft for intelligent robots, and also can be applied to lathe equipment, engineering equipment and so on. Specification:Item Type: Hex Shaft Material: Stainless Steel 303 Thread Model: M4 Model Length (Approx.) 4106-4008-0240 24mm/0.94in 4106-4008-0320 32mm/1.26in 4106-4008-0400 40mm/1.57in Packing List:10 x Hex Shaft Note:1. Match the designed size when using;2. When cutting the designed size by yourself, please operate under professional supervision to ensure safety. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.