Industrial-grade set: Available in three sizes, covering the full range from M1.2 to M22 Dual material options: 304 stainless steel (corrosion-resistant, suitable for food and medical equipment) 65Mn carbon steel (highly elastic, preferred for automotive and industrial equipment) Categorized storage: PVC compartmentalized tool box for quick location Detailed Specifications ▸ Set Options: 620 pcs 304 stainless steel (M1.2-M16); 1430 pcs 65Mn carbon steel (M1.2-M15); 1490 pcs 65Mn carbon steel (M1.2-M22); Applications Automotive transmission repair (Ford/VW models); Industrial bearing mounting (SKF/NSK models); Agricultural machinery maintenance; 3D printer upgrades User Guide ① Select the circlip according to the shaft hole diameter (recommended interference fit: 0.1-0.3mm) ② 304 stainless steel is preferred for humid environments ③ For high load scenarios, choose 65Mn carbon steel