The SCSTL2 bracket accepts 9.5mm to 12.7mm L-Rods and is fastened using two drum key bolts. The SCSTL3 bracket is similar to the STL2, but is tightened via a large wing screw. Both include an L-Rod memory lock. Great for use with RIMS Mounts. The SCSTL4 fits 9.5 to 12.7mm L-rods of floor tom legs. Includes mounting hardware and memory lock.