When you already have the Foredom Flexshaft Hanger MAMH-13 (sold separately) you can customize it with this Bur Holder Arm MAAH-B.  Its 2 tiers have 95 holes: 57 holes for 3/32" shank burs/tools and 38 holes for 1/8" shank tools/burs. Measures 12"L x 2"W x 2"H (30 x 5 x 5cm).  Made in Taiwan.

The Foredom Bench System is unique in that all the different components (all sold separately) work together so you can customize the design and give yourself more visibility and room on your bench. Your most frequently used tools within easy reach and off the benchtop. You can create a custom bench set up; selected by you for your specific situation. All arm attachments and shelves are machined of stainless steel. Pull them in close or push them out of the way as needed. Buy only what you need — just 1 or 2 arms or mix and match multiple arms! As your needs change and grow, add on different arms to meet those needs.  It's a smart, efficient way to organize your bench.  Absolutely everything is sold separately, no arms, no accessories, no flex shafts, etc. are included.