2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. The MC5 Compact Multi Clamp is perfect for connecting parts with diameters from 9mm to 12mm. By combining a boom arm (MCB30, MCB45) and an L-rod (LLT, LCB, LCY) this clamp can be used to attach a variety of parts onto a simple boom arm.