Features and Benefits: Modular design fits any number of wrenches in a set; Fits size range 6mm to 38mm or 1/4" to 1 1/2"; Compact design works well with all wrench types including offset, combination, open end, stubby, and ratcheting; Identification labels included to easily see wrench sizes; Innovative geometry aligns wrenches for a uniform presentation, base has a no-slip feature;