I am currently out of stock on the SB-A Sound Blocks - New stock arriving soon. Sound Block Selections: SB-W 4" American Walnut Sound Block - $20.00 + Shipping SB-O 4" Oak Style Sound Block - $20.00 + Shipping SB-M 4" Ebony Finished Sound Block (Not Shown) - $37.50 + Shipping Sound Blocks in Gift Boxes Quantity: