I have a large set of Henckels 'Pro S' knives that were in 2 separate blocks...I recently moved and counter space is at a premium. I purchased the 26-slot Bamboo Swivel Knife Block,
and all the knives fit into one block- I have a large 'Pro S' 6" cleaver- and it fit perfectly. If you own the 'Pro S' line- this block works great- Some of the smaller knives (pairing) will fit into the steak knife slots as I only have 4 steak knives.