This is a Towa Gage box used for setting the bobbin tension on M size bobbins for longarm quilting. The towa gage is not included.

I have had my towa gage for many years. I hope it hasn't changed sizes. This will fit the towa gage snug so it doesn't fall out. You can put your screwdriver in the tool box side with the lid. I made this box because I kept having to search for my screwdriver.

https://www.amazon.com/CKPSMS-Tension-Original-Factory-M-Style/dp/B07YTZ52PD/ref=sr_1_10?crid=36T8UOFH3DXBL&dib=eyJ2IjoiMSJ9.SupDA5lg0gCOn2PJXuYdmYNeHUUbNnP1c9zGyVEHiZL4FhE9pe6p97Umem-zye6hj-_yRy4vLKqMcoUJHAuh1HNlUP1ZnGXNH1LKNiA9MqSU8ar30WhDjbefEcuAwvRwcLUXSC3V5sn_5x3qjABdW88Uk_3_5gnkzfLUODA_Agg6xyNPk4o3HOVfQH9V8ALPIYC7uCaXPXKRW_Jm1eu55BYJ-u-OfUyU0yRNpwqfSfQt1iMKnK8N_1n030_6uMctCRpdm2uvOReVGhbW2GPxZ-k-gXuw_BHrPgzArEVsndg.WDIJfMO7AwGSNoMiwveRQ9FJmVj8t8qCxisogiw69yY&dib_tag=se&keywords=towa+gauge&qid=1716374817&sprefix=towa+gauge%2Caps%2C111&sr=8-10