It's about 2.4 occasions (meaning the massive one rotates as soon as and the small one rotates 2.4 times) Here are the applicable video links: http://v.youku.com/v_show/id_XMjgxNzk3NTU0NA==.html?spm=a2h3j.8428770.3416059.1 http://www.56.com/u14/v_MTQ1MjI5NTcx.html http://v.youku.com/v_show/id_XMjgxNzk3NTU0NA==.html?spm=a2h3j.8428770.3416059.1 Logistics: You can choose SF freight collect. After placing the order, please touch customer service to remove the shipping commission Attention: The discount wheel needs to be geared up with its own belt, which we don't present (the length of the belt varies counting on the set up role of the discount wheel, so we won't present a hard and fast size belt). Why use deceleration wheels? 1. With this, the needle penetration energy increases several instances (which is important for stitching difficult pores and skin of 12mm or more) 2. Handmade leather goods have excessive requirements for stitching, and the stitching machine speed is just too fast, making it challenging to control details. After deceleration, it is simple to grasp, equivalent to sewing one sew at a time (大的是小的2.4倍) 模板保护代码0528