Brian Blocks
3" x 2" x 1" Steel Blocks,
3/8" Angle Iron for mounting.
(Holes not drilled.)
$25.00
Steel Drag Blocks
These bastards are huge!!!
The block itself is 2" X 2" X 2.25" tall.
Includes brackets as shown, Sold in Pairs.

$59.99
 Steel Drag Blocks Refill
Already drag though your other blocks?
Don't waste money on buying a kit. 
Steel blocks measuring 2" X 2" X 2.25" tall. Sold in pairs complete with hardware.
$45.00