The PROXXON MB200 is far superior than the plastic and flimsy Dremel equivalent. When you remove the attachment ring from the BOSCH GRO 10.8 V rotary tool (which has Dremel compatible threads), it fits inside the PROXXON MB200 drill guide. However, the ring is too small. I solved this by applying two layers of TESA self adhesive roll, which both shrinks the hole, and protects the threads of Bosch GRO. It worked well for drilling holes in my DIY pump controller. However, it has a lot of “give” when pushed. I will try Sugru in the next iteration.