INTERNAL WIRE: Self-tapping threaded split inserts, featuring heavy-duty internal threads, resist heat and corrosion when installed. VIBRATION RESISTANT: The wire combo kit is vibration resistant and can prevent loosening. ELASTICITY: Threaded Inserts Increase connection strength and fatigue resistance through the elasticity of threaded inserts. EASY TO INSTALL: You can easily and quickly install the threaded inserts using only one assembly tool. Specifications: Material:Steel Quantity:116pcs Package Includes: Threaded Thread Inserts, Self Tapping Thread Insert Self Tapping Thread Insert: 10 x M3*0.5 10 x M4 *0.7 10x M5*0.8 10x M6*1.0 10x M8*1.25 4x M10*1.5 4 x M12*1.75 This self-tapping threaded insert has a cutting slot on the head of the threaded sleeve, with high-strength, wear-resistant threads. The cutting groove has the characteristics of self-tapping, easy transfer, strong impact resistance and anti-drop performance Threaded Threaded Inserts: 10 x M3* 0.5*2D 10x M4*0.7*2D 10x M5*0.8*2D 10x M6*1.0*2D< /p> 10 x M8*1.25*2D 4 x M10*1.5*2D 4 x M12*1.75*2D Length of the steel wire threaded insert after installation = inside diameter * XD For example: M3*0.5*2D, Means: M3(means inner diameter D is 3mm)*0.5(tooth pitch after installation is 0.5mm)*2D(length after installation is 2*D=2* 3 = 6 mm) PACKAGE INCLUDED: The package includes 58pcs thread inserts and 58pcs self-tapping thread inserts. Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference , there will be a certain color difference, the actual object received shall prevail.