20/50PCS M6 M8 M12 EU Aluminum Profile Elastic Fastener 2020 3030 4040 4545 Butterfly Fastener Built-in Connector Frame Assembly

High-concerned chemical : None Model Number : 20 30 40 45 is_d : Yes DIY Supplies : Metalworking Material : Stainless steel Origin : Mainland China Certification : NONE Unit Type : piece Package Weight : 0.3kg (0.07lb.) Package Size : 5cm x 10cm x 10cm (1.97in x 3.94in x 3.94in) Are standard parts : standard parts Model : look at the instructions Thickness (mm) : see instructions Number of rolling bodies : look at the instructions Product grade : excellent Material of rolling bearing housing : see instructions