A B Φ6x40 m m Φ6x20mm x1 6 x7 x1 G F x4 E D C K J x1 I H x1 x4 x1 x2 3 x2 L x1 x1 x1
Step1 A D A 8 PCS D 8PCS A A D Step2 8 PCS D 8PCS
Step3 B D B D Step4 7 PCS 7PCS
Step5 Step6