3) Do not operate under overloaded to increase the heat generated by the friction of the soft shaft 2) Try to minimize the degree of bending during the use of the flexible shaft and maintain transmission as much as possible 4) After using it for a period of time, drips engine oil along the flexible shaft for lubrication and heat dissipation. After connecting the soft shaft and the electric grinders body, do not disassemble it normally. 105cm in total length Suggestion: 1) Do not use soft shaft transmission for polishing work for a long. Stop and take a break every 10-15 minutes of use Soft shaft use, soft shaft transmission. Due to the highly-speed rotations of the soft shaft steel wire core inside the soft shaft sleeve, highly-speed friction will cause the inner wall of the soft shaft to Heating. The highly the speed, the more severe the soft shaft will be folded, resulting in more severe heating and easy damage to the soft shaft sleeve, Manufacturer: TOWARDSNAN