About this 3D model

20220904, updated stp for easy modification. Due to the smooth center drill of the chamfered PTFE, it is difficult to hand tighten, so I simply designed a Bosch Go2 adapter to quickly chamfer. The 60-degree chamfer center drill model is 1.5mm, 5mm diameter, and 60° angle https://item.taobao.com/item.htm?spm=a1z09 , from now on, 60-degree chamfering only takes 2 seconds! Please print solid, add 5mm skirt to the bottom.