Check the listing for details. DREMEL Tool Holder Frame Attachment OFFSET 3/4-12 or 3/4-16 or 1/2-20. Condition: New. Listed at 25.00 USD. Most is SAME DAY SHIPPING, or next Day (Depends on the time)If you need it Customized tell me how you want it.Dremel Tool HOLDER made out of 3/8” Thick Aluminum Check the thread of your DREMEL first, Please Select 3/4-12 or 3/4-16 TPI I can Also do 1/2-20 TPIPut size in the Note to seller sectionI Always run the TAP though the threads 4-5 times to make sure threads are clean and you don't have a problem when you get this.Works wonderful when making really small cuts when making HSS lathe cutting tools, like 60 degree threading tools or boring tools.Most modern, (post 1983), Dremel models have ¾ - 12 TPIAbout the only ¾ - 16 TPI models are as follows:- Dremel model #’s - #270, 370, 380 ALL are ¾ - 16 TPI- Ryobi model HT20vs is also ¾ - 16 TPI- Black and Decker, Craftsman and All trade so far seem to be all ¾ - 12 TPIQuick Change Tool Post NOT INCLUDED