These bare pine corners at fabricated from high grade pine NOT FINGERJOINTED ! Each low profile inside corner is approx 3 1/2" from center to end as depicted in photo! I also installed a guide tab to make transition easier! purchase price is for 1 inside transition . You can purchase as many as you need. I also have outside corners! These corners are perfect for staining! block in photo is made to transition with standard 3 5/8 moulding! If you need more/less or wish to combine one with any of my other listings just send me a message and I will create a listing for you! We are custom fabricators and can usually create the perfect transitions for your needs! Simply message me with needs?