This is a BD mounted SINGLE tom set up. Order tom brackets separate. Has an aprox 10inch down tube. Uses standard 10.5mm L arms. INCLUDES bottom base mount not shown in photo. Beefy 1in dia. down tube going up to hold one tom on an OmniBall L-arm. 10.5mm L-arm should fit most Tama, Premier, Pacific, Taye, Ayotte, Roland eletronic pads, current Remo drums, and many matching Drummaker.com tom brackets. NOTE we can custom build one of these with other diameter L arms - (example 12.7mm or 9.5mm to fit other drum co brackets ) Call us about this special request if needed.