These Solid oak low Profile transitions are a steal at this price! Each block is approx 2 1/2" from center to end as depicted in photo! I also installed guide tabs to make transition easier! purchase price is for 4 inside corners. block in photo is made to transition with standard 3 5/8 oak moulding! This exact molding can be purchased in Home Depot, listing photo #6 displays the exact specifications and sku#. This is a lowball price for a 100% oak fabrication! I also have outside corners and middle transitions. If you need more/less or wish to combine order with any of my other listings just send me a message and I will create a listing for you!